3x+9/4x+12

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Solution for 3x+9/4x+12 equation: 


x in (-oo:+oo)

3*x+(9/4)*x+12 = 0

21/4*x+12 = 0 // - 12

21/4*x = -12 // : 21/4

x = -12/21/4

x = -16/7

x = -16/7

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