X-7=40-7(x+9)

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Solution for X-7=40-7(x+9) equation: 



X-7=40-7(X+9)

We move all terms to the left:

X-7-(40-7(X+9))=0



We calculate terms in parentheses: -(40-7(X+9)), so:

40-7(X+9)

determiningTheFunctionDomain
-7(X+9)+40

We multiply parentheses

-7X-63+40

We add all the numbers together, and all the variables

-7X-23

Back to the equation:

-(-7X-23)



We get rid of parentheses

X+7X+23-7=0

We add all the numbers together, and all the variables

8X+16=0

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

8X=-16

X=-16/8

X=-2

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