90=-20(1+2x)=18x

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Solution for 90=-20(1+2x)=18x equation: 



90=-20(1+2x)=18x

We move all terms to the left:

90-(-20(1+2x))=0

We add all the numbers together, and all the variables

-(-20(2x+1))+90=0



We calculate terms in parentheses: -(-20(2x+1)), so:

-20(2x+1)

We multiply parentheses

-40x-20

Back to the equation:

-(-40x-20)



We get rid of parentheses

40x+20+90=0

We add all the numbers together, and all the variables

40x+110=0

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

40x=-110

x=-110/40

x=-2+3/4

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