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x/(-4)+12 = 5*x-(7/3)+2 // - 5*x-(7/3)+2
x/(-4)-(5*x)+7/3-2+12 = 0
x/(-4)-5*x+7/3-2+12 = 0
37/3-21/4*x = 0 // - 37/3
-21/4*x = -37/3 // : -21/4
x = -37/3/(-21/4)
x = 148/63
x = 148/63
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