15=7+(a*4)

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Solution for 15=7+(a*4) equation: 



15=7+(a*4)

We move all terms to the left:

15-(7+(a*4))=0

We add all the numbers together, and all the variables

-(7+(+a*4))+15=0



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

7+(+a*4)

determiningTheFunctionDomain
(+a*4)+7

We get rid of parentheses

a*4+7

Wy multiply elements

4a+7

Back to the equation:

-(4a+7)



We get rid of parentheses

-4a-7+15=0

We add all the numbers together, and all the variables

-4a+8=0

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

-4a=-8

a=-8/-4

a=+2

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