1+8a=129

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Solution for 1+8a=129 equation: 



1+8a=129

We move all terms to the left:

1+8a-(129)=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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