21-x+11+17=90

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Solution for 21-x+11+17=90 equation: 



21-x+11+17=90

We move all terms to the left:

21-x+11+17-(90)=0

We add all the numbers together, and all the variables

-1x-41=0

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

-x=41

x=41/-1

x=-41

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