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(4/5)*x-((3/5)*x) = 2 // - 2
(4/5)*x-((3/5)*x)-2 = 0
(4/5)*x+(-3/5)*x-2 = 0
1/5*x-2 = 0 // + 2
1/5*x = 2 // : 1/5
x = 2/1/5
x = 10
x = 10
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