5x = 3x + 16
Taking the 3x to the left side of the equation and changing its sign
5x - 3x = 16
2x = 16
Divide by 2
x = 8
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-5x+3(x+8)=16-2x
5x+3 = 3x+11 5x-3x = 11-3 2x = 8 x = 4
5x + 5 = 8 -3x 5x = 3 -3x 8x = 3 x = 0.375
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3x+7=5x-13 ----> 3x-5x=-13-7 ----> -2x=-6 -----> x=3