-2x+(10+x)=21

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Solution for -2x+(10+x)=21 equation: 



-2x+(10+x)=21

We move all terms to the left:

-2x+(10+x)-(21)=0

We add all the numbers together, and all the variables

-2x+(x+10)-21=0

We get rid of parentheses

-2x+x+10-21=0

We add all the numbers together, and all the variables

-1x-11=0

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

-x=11

x=11/-1

x=-11

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