5(2a+12)=-80

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Solution for 5(2a+12)=-80 equation: 



5(2a+12)=-80

We move all terms to the left:

5(2a+12)-(-80)=0

We add all the numbers together, and all the variables

5(2a+12)+80=0

We multiply parentheses

10a+60+80=0

We add all the numbers together, and all the variables

10a+140=0

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

10a=-140

a=-140/10

a=-14

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