4u+15-u=9-5u-42

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Solution for 4u+15-u=9-5u-42 equation: 



4u+15-u=9-5u-42

We move all terms to the left:

4u+15-u-(9-5u-42)=0

We add all the numbers together, and all the variables

4u-u-(-5u-33)+15=0

We add all the numbers together, and all the variables

3u-(-5u-33)+15=0

We get rid of parentheses

3u+5u+33+15=0

We add all the numbers together, and all the variables

8u+48=0

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

8u=-48

u=-48/8

u=-6

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