3u-7=10u-91

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Solution for 3u-7=10u-91 equation: 



3u-7=10u-91

We move all terms to the left:

3u-7-(10u-91)=0

We get rid of parentheses

3u-10u+91-7=0

We add all the numbers together, and all the variables

-7u+84=0

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

-7u=-84

u=-84/-7

u=+12

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