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(21/2x-35=90
We move all terms to the left:
(21/2x-35-(90)=0
Domain of the equation: 2x-35-90!=0We multiply all the terms by the denominator
We move all terms containing x to the left, all other terms to the right
2x!=125
x!=125/2
x!=62+1/2
x∈R
(21=0
We add all the numbers together, and all the variables
=0
x=0/1
x=0
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