X^+x=30

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Solution for X^+x=30 equation: 



X^+X=30

We move all terms to the left:

X^+X-(30)=0

We add all the numbers together, and all the variables

2X-30=0

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

2X=30

X=30/2

X=15

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