12=4/7a+8

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Solution for 12=4/7a+8 equation: 



12=4/7a+8

We move all terms to the left:

12-(4/7a+8)=0



Domain of the equation: 7a+8)!=0

a∈R



We get rid of parentheses

-4/7a-8+12=0

We multiply all the terms by the denominator


-8*7a+12*7a-4=0

Wy multiply elements

-56a+84a-4=0

We add all the numbers together, and all the variables

28a-4=0

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

28a=4

a=4/28

a=1/7

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