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(-3/4)*(x+2/5) = (-4/5)*(x-2) // - (-4/5)*(x-2)
(-3/4)*(x+2/5)-((-4/5)*(x-2)) = 0
(-3/4)*(x+2/5)+(4/5)*(x-2) = 0
4/5*(x-2)-3/4*(x+2/5) = 0
4/5*(x-2)-3/4*(x+2/5) = 0
1/20*x-19/10 = 0
1/20*x-19/10 = 0
1/20*x-19/10 = 0 // + 19/10
1/20*x = 19/10 // : 1/20
x = 19/10/1/20
x = 38
x = 38
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