3x+9=-9

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Solution for 3x+9=-9 equation: 


x in (-oo:+oo)

3*x+9 = -9 // + 9

3*x+9+9 = 0

3*x+18 = 0 // - 18

3*x = -18 // : 3

x = -18/3

x = -6

x = -6

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