x-9=15-(x-6)

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Solution for x-9=15-(x-6) equation: 



x-9=15-(x-6)

We move all terms to the left:

x-9-(15-(x-6))=0



We calculate terms in parentheses: -(15-(x-6)), so:

15-(x-6)

determiningTheFunctionDomain
-(x-6)+15

We get rid of parentheses

-x+6+15

We add all the numbers together, and all the variables

-1x+21

Back to the equation:

-(-1x+21)



We get rid of parentheses

x+1x-21-9=0

We add all the numbers together, and all the variables

2x-30=0

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

2x=30

x=30/2

x=15

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