3(-7-8x)-8x=-21-x

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Solution for 3(-7-8x)-8x=-21-x equation: 



3(-7-8x)-8x=-21-x

We move all terms to the left:

3(-7-8x)-8x-(-21-x)=0

We add all the numbers together, and all the variables

3(-8x-7)-8x-(-1x-21)=0

We add all the numbers together, and all the variables

-8x+3(-8x-7)-(-1x-21)=0

We multiply parentheses

-8x-24x-(-1x-21)-21=0

We get rid of parentheses

-8x-24x+1x+21-21=0

We add all the numbers together, and all the variables

-31x=0

x=0/-31

x=0

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