A=90-(4x+2)

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Solution for A=90-(4x+2) equation: 



=90-(4A+2)

We move all terms to the left:

-(90-(4A+2))=0



We calculate terms in parentheses: -(90-(4A+2)), so:

90-(4A+2)

determiningTheFunctionDomain
-(4A+2)+90

We get rid of parentheses

-4A-2+90

We add all the numbers together, and all the variables

-4A+88

Back to the equation:

-(-4A+88)



We get rid of parentheses

4A-88=0

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

4A=88

A=88/4

A=22

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