28=-2(-2a+3)-6(5a+3)

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Solution for 28=-2(-2a+3)-6(5a+3) equation: 



28=-2(-2a+3)-6(5a+3)

We move all terms to the left:

28-(-2(-2a+3)-6(5a+3))=0



We calculate terms in parentheses: -(-2(-2a+3)-6(5a+3)), so:

-2(-2a+3)-6(5a+3)

We multiply parentheses

4a-30a-6-18

We add all the numbers together, and all the variables

-26a-24

Back to the equation:

-(-26a-24)



We get rid of parentheses

26a+24+28=0

We add all the numbers together, and all the variables

26a+52=0

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

26a=-52

a=-52/26

a=-2

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