n
x = 5 + 2x - 3 x = -2
y = 3 + (-x) or y = 3 - x
2x-3=x+2 answer x=5
6x+3 where x=the number
The algebraic expression for three more than a number is: X + 3
2x - 3 = x + 5 x = 8
6 * (x + 3)
2x+3 where x is the unknown number
5=3+x
2 divided by 3 + x.
The expression is: 3x+4
Let the number in question be x. Your statement can be written as (5/6)x + 7 > -3.
Let the smallest of the three consecutive integers be 'x'. Then the three numbers can be represented by x, (x + 1) and (x + 2) Then, 2(x + 2) - 15 = x (twice the third is 15 more that the first) 2x + 4 - 15 = x 2x - x = 15 - 4 x = 11 The three numbers are thus : 11, 12, and 13. And, 2 x 13 = 26 is 15 more than the first number 11.
3(X + 3) = X + 23 3X + 9 = X +23 2X = 14 X = 7
This equation works out to 2x = x + 11. This is because the three consecutive odd integers can be represented by x, x + 2, and x + 4. From the equation 2x - x = 11, so x = 11. Checking, 2 times 11 = 22 which is 7 more than 15. The three integers are 11, 13 and 15.
"How many times" and "how many times more" are often confused. 8 is four times 2 8 is three times more than 2. The logic underlying the second statement is as follows: 8 is 6 MORE than 2 .. .. .. .. .. .. (I) 6 is three times 2 .. .. .. .. .. .. .. (2) Substituting for 6, from (2) into (1) gives 8 is [three times 2] more than 2 and that is collapsed (simplified) to 8 is three times more than 2. Given any pair of positive numbers, X and Y Y is (Y/X - 1) times more than X.