(5a-7)-5(7a-12)+7=0

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Solution for (5a-7)-5(7a-12)+7=0 equation: 



(5a-7)-5(7a-12)+7=0

We multiply parentheses

(5a-7)-35a+60+7=0

We get rid of parentheses

5a-35a-7+60+7=0

We add all the numbers together, and all the variables

-30a+60=0

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

-30a=-60

a=-60/-30

a=+2

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