2x+7=x+21=

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Solution for 2x+7=x+21= equation: 



2x+7=x+21=

We move all terms to the left:

2x+7-(x+21)=0

We get rid of parentheses

2x-x-21+7=0

We add all the numbers together, and all the variables

x-14=0

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

x=14

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