-7+8a=121

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Solution for -7+8a=121 equation: 



-7+8a=121

We move all terms to the left:

-7+8a-(121)=0

We add all the numbers together, and all the variables

8a-128=0

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

8a=128

a=128/8

a=16

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