6-6a+3a=42

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


a in (-oo:+oo)

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

3*a-(6*a)-42+6 = 0

3*a-6*a-42+6 = 0

-3*a-36 = 0 // + 36

-3*a = 36 // : -3

a = 36/(-3)

a = -12

a = -12

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