-23=7+4(a-9)

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Solution for -23=7+4(a-9) equation: 



-23=7+4(a-9)

We move all terms to the left:

-23-(7+4(a-9))=0



We calculate terms in parentheses: -(7+4(a-9)), so:

7+4(a-9)

determiningTheFunctionDomain
4(a-9)+7

We multiply parentheses

4a-36+7

We add all the numbers together, and all the variables

4a-29

Back to the equation:

-(4a-29)



We get rid of parentheses

-4a+29-23=0

We add all the numbers together, and all the variables

-4a+6=0

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

-4a=-6

a=-6/-4

a=1+1/2

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