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(2/3)*(x+4)-((1/4)*(3*x+1/5)) = 0
(2/3)*(x+4)+(-1/4)*(3*x+1/5) = 0
2/3*(x+4)-1/4*(3*x+1/5) = 0
2/3*(x+4)-1/4*(3*x+1/5) = 0
157/60-1/12*x = 0
157/60-1/12*x = 0
157/60-1/12*x = 0 // - 157/60
-1/12*x = -157/60 // : -1/12
x = -157/60/(-1/12)
x = 157/5
x = 157/5
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