7a-4=8

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Solution for 7a-4=8 equation: 



7a-4=8

We move all terms to the left:

7a-4-(8)=0

We add all the numbers together, and all the variables

7a-12=0

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

7a=12

a=12/7

a=1+5/7

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