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n in (-oo:+oo)
(2/3)*(3*n-15) = (3/4)*(4*n-1) // - (3/4)*(4*n-1)
(2/3)*(3*n-15)-((3/4)*(4*n-1)) = 0
(2/3)*(3*n-15)+(-3/4)*(4*n-1) = 0
2/3*(3*n-15)-3/4*(4*n-1) = 0
2/3*(3*n-15)-3/4*(4*n-1) = 0
-n-37/4 = 0
-n-37/4 = 0
-n-37/4 = 0 // + 37/4
-n = 37/4 // * -1
n = -37/4
n = -37/4
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