31=1-3u

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Solution for 31=1-3u equation:



31=1-3u
We move all terms to the left:
31-(1-3u)=0
We add all the numbers together, and all the variables
-(-3u+1)+31=0
We get rid of parentheses
3u-1+31=0
We add all the numbers together, and all the variables
3u+30=0
We move all terms containing u to the left, all other terms to the right
3u=-30
u=-30/3
u=-10

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