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(5/3)*x-(4/5) = (-7/5)*x+6 // - (-7/5)*x+6
(5/3)*x-((-7/5)*x)-(4/5)-6 = 0
(5/3)*x+(7/5)*x-4/5-6 = 0
46/15*x-34/5 = 0 // + 34/5
46/15*x = 34/5 // : 46/15
x = 34/5/46/15
x = 51/23
x = 51/23
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