-20+2a=6(7-5a)+a

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Solution for -20+2a=6(7-5a)+a equation: 



-20+2a=6(7-5a)+a

We move all terms to the left:

-20+2a-(6(7-5a)+a)=0

We add all the numbers together, and all the variables

2a-(6(-5a+7)+a)-20=0



We calculate terms in parentheses: -(6(-5a+7)+a), so:

6(-5a+7)+a

We add all the numbers together, and all the variables

a+6(-5a+7)

We multiply parentheses

a-30a+42

We add all the numbers together, and all the variables

-29a+42

Back to the equation:

-(-29a+42)



We get rid of parentheses

2a+29a-42-20=0

We add all the numbers together, and all the variables

31a-62=0

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

31a=62

a=62/31

a=2

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