x+2x+45=90

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Solution for x+2x+45=90 equation: 



x+2x+45=90

We move all terms to the left:

x+2x+45-(90)=0

We add all the numbers together, and all the variables

3x-45=0

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

3x=45

x=45/3

x=15

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