4x-7=21+5x

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Solution for 4x-7=21+5x equation: 



4x-7=21+5x

We move all terms to the left:

4x-7-(21+5x)=0

We add all the numbers together, and all the variables

4x-(5x+21)-7=0

We get rid of parentheses

4x-5x-21-7=0

We add all the numbers together, and all the variables

-1x-28=0

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

-x=28

x=28/-1

x=-28

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