a+42=a-6+a-6

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



a+42=a-6+a-6

We move all terms to the left:

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

We add all the numbers together, and all the variables

a-(2a-12)+42=0

We get rid of parentheses

a-2a+12+42=0

We add all the numbers together, and all the variables

-1a+54=0

We move all terms containing a to the left, all other terms to the right

-a=-54

a=-54/-1

a=+54

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