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3*x+5/7 = (3/4)*x+289/140 // - (3/4)*x+289/140
3*x-((3/4)*x)+5/7-(289/140) = 0
3*x+(-3/4)*x+5/7-289/140 = 0
9/4*x-27/20 = 0 // + 27/20
9/4*x = 27/20 // : 9/4
x = 27/20/9/4
x = 3/5
x = 3/5
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