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x in (-oo:+oo)
-3*x-3 = 4*x+33/10 // - 4*x+33/10
-3*x-(4*x)-(33/10)-3 = 0
-3*x-4*x-33/10-3 = 0
-7*x-63/10 = 0 // + 63/10
-7*x = 63/10 // : -7
x = 63/10/(-7)
x = -9/10
x = -9/10
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