X+3+x-1+x+1=90

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Solution for X+3+x-1+x+1=90 equation: 



X+3+X-1+X+1=90

We move all terms to the left:

X+3+X-1+X+1-(90)=0

We add all the numbers together, and all the variables

3X-87=0

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

3X=87

X=87/3

X=29

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