(4-x)+(5x+2)=90

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Solution for (4-x)+(5x+2)=90 equation: 



(4-x)+(5x+2)=90

We move all terms to the left:

(4-x)+(5x+2)-(90)=0

We add all the numbers together, and all the variables

(-1x+4)+(5x+2)-90=0

We get rid of parentheses

-1x+5x+4+2-90=0

We add all the numbers together, and all the variables

4x-84=0

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

4x=84

x=84/4

x=21

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