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(2/5)*x-((3/5)*x)-1 = -53/50 // + -53/50
(2/5)*x-((3/5)*x)-(-53/50)-1 = 0
(2/5)*x+(-3/5)*x+53/50-1 = 0
3/50-1/5*x = 0 // - 3/50
-1/5*x = -3/50 // : -1/5
x = -3/50/(-1/5)
x = 3/10
x = 3/10
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