15-3x/4x-20 - solution

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Solution for 15-3x/4x-20 equation:

x in (-oo:+oo)

15-(((3*x)/4)*x)-20 = 0

(-3/4)*x^2-20+15 = 0

-3/4*x^2 = 5 // : -3/4

x^2 = -20/3

x belongs to the empty set

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