-20+2u=20-2u

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Solution for -20+2u=20-2u equation: 



-20+2u=20-2u

We move all terms to the left:

-20+2u-(20-2u)=0

We add all the numbers together, and all the variables

2u-(-2u+20)-20=0

We get rid of parentheses

2u+2u-20-20=0

We add all the numbers together, and all the variables

4u-40=0

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

4u=40

u=40/4

u=10

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