5x-21=28-2x

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Solution for 5x-21=28-2x equation: 



5x-21=28-2x

We move all terms to the left:

5x-21-(28-2x)=0

We add all the numbers together, and all the variables

5x-(-2x+28)-21=0

We get rid of parentheses

5x+2x-28-21=0

We add all the numbers together, and all the variables

7x-49=0

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

7x=49

x=49/7

x=7

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