2(a-7)-20+a=-2(a-8)

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Solution for 2(a-7)-20+a=-2(a-8) equation: 



2(a-7)-20+a=-2(a-8)

We move all terms to the left:

2(a-7)-20+a-(-2(a-8))=0

We add all the numbers together, and all the variables

a+2(a-7)-(-2(a-8))-20=0

We multiply parentheses

a+2a-(-2(a-8))-14-20=0



We calculate terms in parentheses: -(-2(a-8)), so:

-2(a-8)

We multiply parentheses

-2a+16

Back to the equation:

-(-2a+16)



We add all the numbers together, and all the variables

3a-(-2a+16)-34=0

We get rid of parentheses

3a+2a-16-34=0

We add all the numbers together, and all the variables

5a-50=0

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

5a=50

a=50/5

a=10

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