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(1/5)*(2*x-7) = 3 // - 3
(1/5)*(2*x-7)-3 = 0
1/5*(2*x-7)-3 = 0
1/5*(2*x-7)-3 = 0
2/5*x-22/5 = 0
2/5*x-22/5 = 0
2/5*x-22/5 = 0 // + 22/5
2/5*x = 22/5 // : 2/5
x = 22/5/2/5
x = 11
x = 11
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