13u=20+8u

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Solution for 13u=20+8u equation: 



13u=20+8u

We move all terms to the left:

13u-(20+8u)=0

We add all the numbers together, and all the variables

13u-(8u+20)=0

We get rid of parentheses

13u-8u-20=0

We add all the numbers together, and all the variables

5u-20=0

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

5u=20

u=20/5

u=4

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