7a+12=84

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Solution for 7a+12=84 equation: 



7a+12=84

We move all terms to the left:

7a+12-(84)=0

We add all the numbers together, and all the variables

7a-72=0

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

7a=72

a=72/7

a=10+2/7

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