-30-a=-2(8+2a)-4a

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Solution for -30-a=-2(8+2a)-4a equation: 



-30-a=-2(8+2a)-4a

We move all terms to the left:

-30-a-(-2(8+2a)-4a)=0

We add all the numbers together, and all the variables

-a-(-2(2a+8)-4a)-30=0

We add all the numbers together, and all the variables

-1a-(-2(2a+8)-4a)-30=0



We calculate terms in parentheses: -(-2(2a+8)-4a), so:

-2(2a+8)-4a

We add all the numbers together, and all the variables

-4a-2(2a+8)

We multiply parentheses

-4a-4a-16

We add all the numbers together, and all the variables

-8a-16

Back to the equation:

-(-8a-16)



We get rid of parentheses

-1a+8a+16-30=0

We add all the numbers together, and all the variables

7a-14=0

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

7a=14

a=14/7

a=2

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