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(5*(x+5))/4 = 2*x-4 // - 2*x-4
(5*(x+5))/4-(2*x)+4 = 0
(5*(x+5))/4-2*x+4 = 0
(5*(x+5))/4+(-2*4*x)/4+(4^2)/4 = 0
5*(x+5)-2*4*x+16 = 0
16-3*x+25 = 0
41-3*x = 0
(41-3*x)/4 = 0
(41-3*x)/4 = 0 // * 4
41-3*x = 0
41-3*x = 0 // - 41
-3*x = -41 // : -3
x = -41/(-3)
x = 41/3
x = 41/3
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