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(1/4)*(4*x-1) = -1/5-(2/5) // + -1/5-(2/5)
(1/4)*(4*x-1)-(-1/5)+2/5 = 0
(1/4)*(4*x-1)+1/5+2/5 = 0
1/4*(4*x-1)+1/5+2/5 = 0
(1/4*5*(4*x-1))/5+1/5+2/5 = 0
1/4*5*(4*x-1)+1+2 = 0
5*x-1/4+2 = 0
5*x+7/4 = 0
(5*x+7/4)/5 = 0
(5*x+7/4)/5 = 0 // * 5
5*x+7/4 = 0
5*x+7/4 = 0 // - 7/4
5*x = -7/4 // : 5
x = -7/4/5
x = -7/20
x = -7/20
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