2(a-7)-77=9

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Solution for 2(a-7)-77=9 equation: 



2(a-7)-77=9

We move all terms to the left:

2(a-7)-77-(9)=0

We add all the numbers together, and all the variables

2(a-7)-86=0

We multiply parentheses

2a-14-86=0

We add all the numbers together, and all the variables

2a-100=0

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

2a=100

a=100/2

a=50

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