4x-9-3x=-21

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Solution for 4x-9-3x=-21 equation: 


x in (-oo:+oo)

4*x-(3*x)-9 = -21 // + 21

4*x-(3*x)-9+21 = 0

4*x-3*x-9+21 = 0

x+12 = 0 // - 12

x = -12

x = -12

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