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(3/8)*(x+2) = y // - y
(3/8)*(x+2)-y = 0
3/8*(x+2)-y = 0
3/8*(x+2)-y = 0
3/8*x-y+3/4 = 0
3/8*x-y+3/4 = 0
3/8*x-y+3/4 = 0 // - 3/4-y
3/8*x = -(3/4-y) // : 3/8
x = (-(3/4-y))/3/8
x = 8/3*(y-3/4)
x = 8/3*(y-3/4)
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