X-1+x-1=90

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



X-1+X-1=90

We move all terms to the left:

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

We add all the numbers together, and all the variables

2X-92=0

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

2X=92

X=92/2

X=46

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