8x+63=x+42

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Solution for 8x+63=x+42 equation: 



8x+63=x+42

We move all terms to the left:

8x+63-(x+42)=0

We get rid of parentheses

8x-x-42+63=0

We add all the numbers together, and all the variables

7x+21=0

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

7x=-21

x=-21/7

x=-3

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