-6+3a=-42

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Solution for -6+3a=-42 equation: 


a in (-oo:+oo)

3*a-6 = -42 // + 42

3*a-6+42 = 0

3*a+36 = 0 // - 36

3*a = -36 // : 3

a = -36/3

a = -12

a = -12

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