-40+7a=4(5a+3)

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Solution for -40+7a=4(5a+3) equation: 



-40+7a=4(5a+3)

We move all terms to the left:

-40+7a-(4(5a+3))=0



We calculate terms in parentheses: -(4(5a+3)), so:

4(5a+3)

We multiply parentheses

20a+12

Back to the equation:

-(20a+12)



We get rid of parentheses

7a-20a-12-40=0

We add all the numbers together, and all the variables

-13a-52=0

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

-13a=52

a=52/-13

a=-4

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