15-5u+8u=15-18u

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Solution for 15-5u+8u=15-18u equation: 



15-5u+8u=15-18u

We move all terms to the left:

15-5u+8u-(15-18u)=0

We add all the numbers together, and all the variables

-5u+8u-(-18u+15)+15=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

3u+18u-15+15=0

We add all the numbers together, and all the variables

21u=0

u=0/21

u=0

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