15+4(3+u)=31

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Solution for 15+4(3+u)=31 equation: 



15+4(3+u)=31

We move all terms to the left:

15+4(3+u)-(31)=0

We add all the numbers together, and all the variables

4(u+3)+15-31=0

We add all the numbers together, and all the variables

4(u+3)-16=0

We multiply parentheses

4u+12-16=0

We add all the numbers together, and all the variables

4u-4=0

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

4u=4

u=4/4

u=1

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