3u+u=2-13

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Solution for 3u+u=2-13 equation: 



3u+u=2-13

We move all terms to the left:

3u+u-(2-13)=0

We add all the numbers together, and all the variables

3u+u-(-11)=0

We add all the numbers together, and all the variables

4u+11=0

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

4u=-11

u=-11/4

u=-2+3/4

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