(x+42)-3x=90

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Solution for (x+42)-3x=90 equation: 



(x+42)-3x=90

We move all terms to the left:

(x+42)-3x-(90)=0

We add all the numbers together, and all the variables

-3x+(x+42)-90=0

We get rid of parentheses

-3x+x+42-90=0

We add all the numbers together, and all the variables

-2x-48=0

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

-2x=48

x=48/-2

x=-24

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