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(-3/5)*(5*x-2)+4*x = -4/5 // + -4/5
(-3/5)*(5*x-2)+4*x-(-4/5) = 0
(-3/5)*(5*x-2)+4*x+4/5 = 0
4*x-3/5*(5*x-2)+4/5 = 0
(-3/5*5*(5*x-2))/5+(4*5*x)/5+4/5 = 0
4*5*x-3/5*5*(5*x-2)+4 = 0
5*x+4+6 = 0
5*x+10 = 0
(5*x+10)/5 = 0
(5*x+10)/5 = 0 // * 5
5*x+10 = 0
5*x+10 = 0 // - 10
5*x = -10 // : 5
x = -10/5
x = -2
x = -2
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