2(a+5)-10=-2(a+10)

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Solution for 2(a+5)-10=-2(a+10) equation: 



2(a+5)-10=-2(a+10)

We move all terms to the left:

2(a+5)-10-(-2(a+10))=0

We multiply parentheses

2a-(-2(a+10))+10-10=0



We calculate terms in parentheses: -(-2(a+10)), so:

-2(a+10)

We multiply parentheses

-2a-20

Back to the equation:

-(-2a-20)



We add all the numbers together, and all the variables

2a-(-2a-20)=0

We get rid of parentheses

2a+2a+20=0

We add all the numbers together, and all the variables

4a+20=0

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

4a=-20

a=-20/4

a=-5

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