-5a-3a=5(2a-4)+7(-2a+4)

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Solution for -5a-3a=5(2a-4)+7(-2a+4) equation: 



-5a-3a=5(2a-4)+7(-2a+4)

We move all terms to the left:

-5a-3a-(5(2a-4)+7(-2a+4))=0

We add all the numbers together, and all the variables

-8a-(5(2a-4)+7(-2a+4))=0



We calculate terms in parentheses: -(5(2a-4)+7(-2a+4)), so:

5(2a-4)+7(-2a+4)

We multiply parentheses

10a-14a-20+28

We add all the numbers together, and all the variables

-4a+8

Back to the equation:

-(-4a+8)



We get rid of parentheses

-8a+4a-8=0

We add all the numbers together, and all the variables

-4a-8=0

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

-4a=8

a=8/-4

a=-2

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