5u-20u=15

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Solution for 5u-20u=15 equation: 



5u-20u=15

We move all terms to the left:

5u-20u-(15)=0

We add all the numbers together, and all the variables

-15u-15=0

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

-15u=15

u=15/-15

u=-1

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