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really depends. 12x - 8y = 48 3x - 2y = 12. You can't decide, but one ordered pair is (4,0)
-5 + 12x = 18x + 7Subtract 7 from each side:-12 + 12x = 18xSubtract 12x from each side:-12 = 6xDivide each side by 6:-2 = x
We'll go ahead and find the answer, even though we're not completely convincedthat you know what the question is.-12x = 72Divide each side of the equation by -12:x = -6
4y-12x=8 You can't get values for y and x, but if you wanted the equation of a line, find y =mx+b form. 4y = 12x +8 Divide each side by 4 y = 3x + 2
The 'answer' is the number that 'x' has to be in order to make the statement true.18x + 3 = 12xSubtract 3 from each side of the equation:18x = 12x - 3Subtract 12x from each side:6x = -3Divide each side by 6 :x = - 1/2
Subtract 12x from each side: 3x - 5 = 7Add 5 to each side: 3x = 12Divide each side by 3: x = 4
Add 9x to each side: 12x + 11 = -25Subtract 11 from each side: 12x = -36Divide each side by 12: x = -3
The length of each side is: (12x+21)/3 = 4x+7
2x2 - 72 would be factored into (2x - 12)(x + 6) or (2x + 12)(x - 6) To double check, multiply each pair: (2x - 12)(x + 6) = 2x2 + 12x - 12x - 72 = 2x2 - 72 (2x + 12)(x - 6) = 2x2 - 12x + 12 x - 72 = 2x2 - 72
Subtract 7 from each side: 12x = 8x + 16Subtract 8x from each side: 4x = 16Divide each side by 4: x = 4
OK, SO 4x = 12x + 32.SO 4x -12x-12x-12x+32 (subtract 12x from each side to get x on one side)SO -8x = 32 (simplify)SO -1 (-8x) = 32 (-1) (multiply each side by -1)SO 8x -32 (simplify)SO 8x / 8 = -32/8 (divide each side by eight (8) to get ""X"" by itself)SO x= -4SO x = -4.Does that help?Hope that helps!
I assume you mean...,12X - 5Y = 30Y = 2X - 6You are given Y, so insert it into the top equation above.12X - 5(2X - 6) = 3012X - 10X + 30 = 302X = 0X = 0=====so, obviously,Y = - 6======Check.12(0) - 5(- 6) = 3030 = 30========checks(0, - 6)=======Ordered pair.