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x in (-oo:+oo)
-34 = 5*x-7*x-10 // - 5*x-7*x-10
10-(-7*x)-(5*x)-34 = 0
7*x-5*x-34+10 = 0
2*x-24 = 0 // + 24
2*x = 24 // : 2
x = 24/2
x = 12
x = 12
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