4a-4=-12

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Solution for 4a-4=-12 equation: 


a in (-oo:+oo)

4*a-4 = -12 // + 12

4*a-4+12 = 0

4*a+8 = 0 // - 8

4*a = -8 // : 4

a = -8/4

a = -2

a = -2

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