4u-15=12-5u

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Solution for 4u-15=12-5u equation: 



4u-15=12-5u

We move all terms to the left:

4u-15-(12-5u)=0

We add all the numbers together, and all the variables

4u-(-5u+12)-15=0

We get rid of parentheses

4u+5u-12-15=0

We add all the numbers together, and all the variables

9u-27=0

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

9u=27

u=27/9

u=3

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