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31+x+90/4=90
We move all terms to the left:
31+x+90/4-(90)=0
determiningTheFunctionDomain x+31-90+90/4=0
We add all the numbers together, and all the variables
x-59+90/4=0
We multiply all the terms by the denominator
x*4+90-59*4=0
We add all the numbers together, and all the variables
x*4-146=0
Wy multiply elements
4x-146=0
We move all terms containing x to the left, all other terms to the right
4x=146
x=146/4
x=36+1/2
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