3x-9=15-4(x-1)

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Solution for 3x-9=15-4(x-1) equation: 



3x-9=15-4(x-1)

We move all terms to the left:

3x-9-(15-4(x-1))=0



We calculate terms in parentheses: -(15-4(x-1)), so:

15-4(x-1)

determiningTheFunctionDomain
-4(x-1)+15

We multiply parentheses

-4x+4+15

We add all the numbers together, and all the variables

-4x+19

Back to the equation:

-(-4x+19)



We get rid of parentheses

3x+4x-19-9=0

We add all the numbers together, and all the variables

7x-28=0

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

7x=28

x=28/7

x=4

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