7x-21=2x+34

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Solution for 7x-21=2x+34 equation: 



7x-21=2x+34

We move all terms to the left:

7x-21-(2x+34)=0

We get rid of parentheses

7x-2x-34-21=0

We add all the numbers together, and all the variables

5x-55=0

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

5x=55

x=55/5

x=11

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