3a-9=-27

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Solution for 3a-9=-27 equation: 


a in (-oo:+oo)

3*a-9 = -27 // + 27

3*a-9+27 = 0

3*a+18 = 0 // - 18

3*a = -18 // : 3

a = -18/3

a = -6

a = -6

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