X^+3x=90

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Solution for X^+3x=90 equation: 



X^+3X=90

We move all terms to the left:

X^+3X-(90)=0

We add all the numbers together, and all the variables

4X-90=0

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

4X=90

X=90/4

X=22+1/2

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