3u-15=81

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Solution for 3u-15=81 equation: 



3u-15=81

We move all terms to the left:

3u-15-(81)=0

We add all the numbers together, and all the variables

3u-96=0

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

3u=96

u=96/3

u=32

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