u+91-18=13+4u

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Solution for u+91-18=13+4u equation:



u+91-18=13+4u
We move all terms to the left:
u+91-18-(13+4u)=0
We add all the numbers together, and all the variables
u-(4u+13)+91-18=0
We add all the numbers together, and all the variables
u-(4u+13)+73=0
We get rid of parentheses
u-4u-13+73=0
We add all the numbers together, and all the variables
-3u+60=0
We move all terms containing u to the left, all other terms to the right
-3u=-60
u=-60/-3
u=+20

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