7x+21=5x+49

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Solution for 7x+21=5x+49 equation: 



7x+21=5x+49

We move all terms to the left:

7x+21-(5x+49)=0

We get rid of parentheses

7x-5x-49+21=0

We add all the numbers together, and all the variables

2x-28=0

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

2x=28

x=28/2

x=14

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