X-3+x=120

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Solution for X-3+x=120 equation: 



X-3+X=120

We move all terms to the left:

X-3+X-(120)=0

We add all the numbers together, and all the variables

2X-123=0

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

2X=123

X=123/2

X=61+1/2

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