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(4/5)*x+8 = 68/5 // - 68/5
(4/5)*x-(68/5)+8 = 0
(4/5)*x-68/5+8 = 0
4/5*x-28/5 = 0 // + 28/5
4/5*x = 28/5 // : 4/5
x = 28/5/4/5
x = 7
x = 7
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