12=a/9-4

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Solution for 12=a/9-4 equation: 



12=a/9-4

We move all terms to the left:

12-(a/9-4)=0

We get rid of parentheses

-a/9+4+12=0

We multiply all the terms by the denominator


-a+4*9+12*9=0

We add all the numbers together, and all the variables

-1a+144=0

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

-a=-144

a=-144/-1

a=+144

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