45=-5(4a+3)

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Solution for 45=-5(4a+3) equation: 



45=-5(4a+3)

We move all terms to the left:

45-(-5(4a+3))=0



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

-5(4a+3)

We multiply parentheses

-20a-15

Back to the equation:

-(-20a-15)



We get rid of parentheses

20a+15+45=0

We add all the numbers together, and all the variables

20a+60=0

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

20a=-60

a=-60/20

a=-3

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