5X + 6 = 2X + 15
-2X -2X
3X + 6 = 15
-6 -6
3X = 15
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3 3
x = 5
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2x+3x = 5x
3x + 5x = 2x + 28x = 2x + 26x = 2x = (2/6) = 1/3
5x-8= -2x+6(+8 = +8)5x=-2x+14(+2x = +2x)7x=14x=14
3x + 2x = 5x. 5x= (-4) X = (-4)/5 x= -0.8
7x-5x=8 2x=8 x=4