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3*x-(12/5) = 6 // - 6
3*x-(12/5)-6 = 0
3*x-12/5-6 = 0
3*x-42/5 = 0 // + 42/5
3*x = 42/5 // : 3
x = 42/5/3
x = 14/5
x = 14/5
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