8x = 2x + 15 6x = 15 x = 15/6 = 2.5
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2x+1 = 9 2x = 9-1 2x = 8 x = 4
5X + 6 = 2X + 15 -2X -2X 3X + 6 = 15 -6 -6 3X = 15 ---- ----- 3 3 x = 5 im so smart.
3x + 2x = 5x. 5x= (-4) X = (-4)/5 x= -0.8
2x + 12 y =36subtract 2x from both sides12y = 36 - 2xdivide both sides by 12y = (36 - 2x)/12
2x-5y+15=0 -5y=-2x-15 y=(2/5)x+3