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x in (-oo:+oo)
3*(2*x-1)+(3/2)*(3*x+4) = 1-(4*x) // - 1-(4*x)
3*(2*x-1)+(3/2)*(3*x+4)+4*x-1 = 0
3*(2*x-1)+3/2*(3*x+4)+4*x-1 = 0
3*(2*x-1)+3/2*(3*x+4)+4*x-1 = 0
21/2*x+4*x-1+3 = 0
29/2*x-1+3 = 0
29/2*x+2 = 0
29/2*x+2 = 0
29/2*x+2 = 0 // - 2
29/2*x = -2 // : 29/2
x = -2/29/2
x = -4/29
x = -4/29
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