-15u-13+3=20-18u

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Solution for -15u-13+3=20-18u equation: 



-15u-13+3=20-18u

We move all terms to the left:

-15u-13+3-(20-18u)=0

We add all the numbers together, and all the variables

-15u-(-18u+20)-13+3=0

We add all the numbers together, and all the variables

-15u-(-18u+20)-10=0

We get rid of parentheses

-15u+18u-20-10=0

We add all the numbers together, and all the variables

3u-30=0

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

3u=30

u=30/3

u=10

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