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n in (-oo:+oo)
2*(3*n+8) = 34 // - 34
2*(3*n+8)-34 = 0
2*(3*n+8)-34 = 0
6*n-18 = 0
6*n-18 = 0
6*n-18 = 0 // + 18
6*n = 18 // : 6
n = 18/6
n = 3
n = 3
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