3u-8=7

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Solution for 3u-8=7 equation: 



3u-8=7

We move all terms to the left:

3u-8-(7)=0

We add all the numbers together, and all the variables

3u-15=0

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

3u=15

u=15/3

u=5

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