90=-1-7(1-2x)

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Solution for 90=-1-7(1-2x) equation: 



90=-1-7(1-2x)

We move all terms to the left:

90-(-1-7(1-2x))=0

We add all the numbers together, and all the variables

-(-1-7(-2x+1))+90=0



We calculate terms in parentheses: -(-1-7(-2x+1)), so:

-1-7(-2x+1)

determiningTheFunctionDomain
-7(-2x+1)-1

We multiply parentheses

14x-7-1

We add all the numbers together, and all the variables

14x-8

Back to the equation:

-(14x-8)



We get rid of parentheses

-14x+8+90=0

We add all the numbers together, and all the variables

-14x+98=0

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

-14x=-98

x=-98/-14

x=+7

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