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x in (-oo:+oo)
2*x+1 = 7*x-44 // - 7*x-44
2*x-(7*x)+1+44 = 0
2*x-7*x+1+44 = 0
45-5*x = 0 // - 45
-5*x = -45 // : -5
x = -45/(-5)
x = 9
x = 9
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