-2(5+x)=21

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Solution for -2(5+x)=21 equation: 



-2(5+x)=21

We move all terms to the left:

-2(5+x)-(21)=0

We add all the numbers together, and all the variables

-2(x+5)-21=0

We multiply parentheses

-2x-10-21=0

We add all the numbers together, and all the variables

-2x-31=0

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

-2x=31

x=31/-2

x=-15+1/2

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