9x+21=6x+63

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Solution for 9x+21=6x+63 equation: 



9x+21=6x+63

We move all terms to the left:

9x+21-(6x+63)=0

We get rid of parentheses

9x-6x-63+21=0

We add all the numbers together, and all the variables

3x-42=0

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

3x=42

x=42/3

x=14

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