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both are 1s are negative and negative multiply negative = positive
Multiply by -1
It is easiest to think about the signs of the numbers separately from their values (as though the numbers were positive):First consider the signs:Multiplying positive by positive => result is positiveMultiplying positive by negative => result is negativeMultiplying negative by positive => result is negativeMultiplying negative by negative => result is positiveOr to summarise:If the numbers are the same sign (both positive or both negative) the result is positive.If the numbers are of opposite signs (one positive, one negative) the result is negative.Then multiply the values of the two numbers together (multiply them as though both were positive) and put the sign on the result as decided above.eg to multiply -24 by 3:negative times positive => result negative (different signs)24 x 3 = 72sign found in step 1 to be negative, so -24 x 3 = -72eg to multiply -15 by -1/3negative times negative => result positive (same signs)15 x 1/3 = 5sign found in step 1 to be positive, so -15 x -1/3 = 5eg to multiply 12 by -1/4positive times negative => result negative (different signs)12 x 1/4 = 3sign found in step 1 to be negative, so 12 x -1/4 = -3.
The answer is normally a positive fraction or decimal as for example 4^-2 = 1/16 or 0.0625
Use a number line to image this. Subtraction means "switch directions". ..._-2_-1_0_+1_+2_... Adding a negative is the same as subtracting. You switch directions on the number line. -1 + -1 = -2 is the same as -1 - 1 = -2. Adding negative numbers only makes the answer more negative. If you add a positive close to zero and a negative far from zero you get a negative. If you add a positive far from zero to a negative close to zero you get a positive. Your question seems to indicate confusion with multiplication rather than addition. When you multiply 2 negatives, you switch directions twice and end up going to the right (Positive) on the number line. remember keep change change.
both are 1s are negative and negative multiply negative = positive
There are no two real numbers that do, but the complex numbers (2 + i) and (2 - i) will.If you want two numbers that multiply to negative 5 and add to positive 4 then: -1 and 5If you want two numbers that multiply to negative 5 and add to negative 4 then: 1 and -5
positive + positive = add (e.g. 2 + 1 = 3)positive + negative = take (e.g. 2 + -1 = 2 - 1 = 1)positive - positive = take (e.g. 2 - 1 = 1)positive - negative = add (e.g. 2 - -1 = 2 + 1 = 3)negative + positive = add (e.g. -2 + 1 = -1)negative + negative = take (e.g. -2 + -1 = -2 - 1 = -3)negative - positive = take (e.g. -2 - 1 = -3)negative - negative = add (e.g. -2 - -1 = -2 + 1 = -1)
Multiply by -1
If you are adding a positive number, then this is the same as normal addition. For instance, 4 add positive 5 is 9. negative 1 add positive 8 is 7. If you are adding a negative number, then this is the same as subtracting that number. For instance 6 add negative 1 is 5. negative 7 add negative 2 is negative 9.
When the signs of the numbers are the same, the answer is positive. When the signs are different, the answer is negative. -1 x -1 = 1
you can't -1+2=1
It is easiest to think about the signs of the numbers separately from their values (as though the numbers were positive):First consider the signs:Multiplying positive by positive => result is positiveMultiplying positive by negative => result is negativeMultiplying negative by positive => result is negativeMultiplying negative by negative => result is positiveOr to summarise:If the numbers are the same sign (both positive or both negative) the result is positive.If the numbers are of opposite signs (one positive, one negative) the result is negative.Then multiply the values of the two numbers together (multiply them as though both were positive) and put the sign on the result as decided above.eg to multiply -24 by 3:negative times positive => result negative (different signs)24 x 3 = 72sign found in step 1 to be negative, so -24 x 3 = -72eg to multiply -15 by -1/3negative times negative => result positive (same signs)15 x 1/3 = 5sign found in step 1 to be positive, so -15 x -1/3 = 5eg to multiply 12 by -1/4positive times negative => result negative (different signs)12 x 1/4 = 3sign found in step 1 to be negative, so 12 x -1/4 = -3.
The answer is normally a positive fraction or decimal as for example 4^-2 = 1/16 or 0.0625
Use a number line to image this. Subtraction means "switch directions". ..._-2_-1_0_+1_+2_... Adding a negative is the same as subtracting. You switch directions on the number line. -1 + -1 = -2 is the same as -1 - 1 = -2. Adding negative numbers only makes the answer more negative. If you add a positive close to zero and a negative far from zero you get a negative. If you add a positive far from zero to a negative close to zero you get a positive. Your question seems to indicate confusion with multiplication rather than addition. When you multiply 2 negatives, you switch directions twice and end up going to the right (Positive) on the number line. remember keep change change.
-3 and 1
Subtract a positive value from it. Add a negative value to it. Multiply by a number smaller than 1 Divide by a number larger than 1.