2a+7+109=100

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Solution for 2a+7+109=100 equation: 



2a+7+109=100

We move all terms to the left:

2a+7+109-(100)=0

We add all the numbers together, and all the variables

2a+16=0

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

2a=-16

a=-16/2

a=-8

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