4x-6=-21+x

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Solution for 4x-6=-21+x equation: 



4x-6=-21+x

We move all terms to the left:

4x-6-(-21+x)=0

We add all the numbers together, and all the variables

4x-(x-21)-6=0

We get rid of parentheses

4x-x+21-6=0

We add all the numbers together, and all the variables

3x+15=0

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

3x=-15

x=-15/3

x=-5

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