-4=18+2(a-7)

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Solution for -4=18+2(a-7) equation: 



-4=18+2(a-7)

We move all terms to the left:

-4-(18+2(a-7))=0



We calculate terms in parentheses: -(18+2(a-7)), so:

18+2(a-7)

determiningTheFunctionDomain
2(a-7)+18

We multiply parentheses

2a-14+18

We add all the numbers together, and all the variables

2a+4

Back to the equation:

-(2a+4)



We get rid of parentheses

-2a-4-4=0

We add all the numbers together, and all the variables

-2a-8=0

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

-2a=8

a=8/-2

a=-4

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