(X-3)+2x=90

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Solution for (X-3)+2x=90 equation: 



(X-3)+2X=90

We move all terms to the left:

(X-3)+2X-(90)=0

We add all the numbers together, and all the variables

2X+(X-3)-90=0

We get rid of parentheses

2X+X-3-90=0

We add all the numbers together, and all the variables

3X-93=0

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

3X=93

X=93/3

X=31

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