20-11u=-13u-20

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Solution for 20-11u=-13u-20 equation: 



20-11u=-13u-20

We move all terms to the left:

20-11u-(-13u-20)=0

We get rid of parentheses

-11u+13u+20+20=0

We add all the numbers together, and all the variables

2u+40=0

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

2u=-40

u=-40/2

u=-20

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