5(a+9)=80

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Solution for 5(a+9)=80 equation: 



5(a+9)=80

We move all terms to the left:

5(a+9)-(80)=0

We multiply parentheses

5a+45-80=0

We add all the numbers together, and all the variables

5a-35=0

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

5a=35

a=35/5

a=7

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