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x in (-oo:+oo)
10-3*x = 3*x+16 // - 3*x+16
10-3*x-(3*x)-16 = 0
10-3*x-3*x-16 = 0
-6*x-6 = 0 // + 6
-6*x = 6 // : -6
x = 6/(-6)
x = -1
x = -1
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