x+3+x-1=90

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



x+3+x-1=90

We move all terms to the left:

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

We add all the numbers together, and all the variables

2x-88=0

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

2x=88

x=88/2

x=44

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