12=18-a/2

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Solution for 12=18-a/2 equation: 



12=18-a/2

We move all terms to the left:

12-(18-a/2)=0

We add all the numbers together, and all the variables

-(-a/2+18)+12=0

We get rid of parentheses

a/2-18+12=0

We multiply all the terms by the denominator


a-18*2+12*2=0

We add all the numbers together, and all the variables

a-12=0

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

a=12

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