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x in (-oo:+oo)
(-5/3)*x+12 = (3/2)*x-7 // - (3/2)*x-7
(-5/3)*x-((3/2)*x)+7+12 = 0
(-5/3)*x+(-3/2)*x+7+12 = 0
19-19/6*x = 0 // - 19
-19/6*x = -19 // : -19/6
x = -19/(-19/6)
x = 6
x = 6
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