-18=(9-a/2)

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Solution for -18=(9-a/2) equation: 



-18=(9-a/2)

We move all terms to the left:

-18-((9-a/2))=0

We add all the numbers together, and all the variables

-((-a/2+9))-18=0

We multiply all the terms by the denominator


-((-a-18*2+9))=0



We calculate terms in parentheses: -((-a-18*2+9)), so:

(-a-18*2+9)

We add all the numbers together, and all the variables

(-1a-27)

We get rid of parentheses

-1a-27

Back to the equation:

-(-1a-27)



We get rid of parentheses

1a+27=0

We add all the numbers together, and all the variables

a+27=0

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

a=-27

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