3(x+10)=-(x-10)

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Solution for 3(x+10)=-(x-10) equation: 



3(x+10)=-(x-10)

We move all terms to the left:

3(x+10)-(-(x-10))=0

We multiply parentheses

3x-(-(x-10))+30=0



We calculate terms in parentheses: -(-(x-10)), so:

-(x-10)

We get rid of parentheses

-x+10

We add all the numbers together, and all the variables

-1x+10

Back to the equation:

-(-1x+10)



We get rid of parentheses

3x+1x-10+30=0

We add all the numbers together, and all the variables

4x+20=0

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

4x=-20

x=-20/4

x=-5

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