-4x-7=21-3x

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Solution for -4x-7=21-3x equation: 



-4x-7=21-3x

We move all terms to the left:

-4x-7-(21-3x)=0

We add all the numbers together, and all the variables

-4x-(-3x+21)-7=0

We get rid of parentheses

-4x+3x-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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