3(u-12)-8=7

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Solution for 3(u-12)-8=7 equation: 



3(u-12)-8=7

We move all terms to the left:

3(u-12)-8-(7)=0

We add all the numbers together, and all the variables

3(u-12)-15=0

We multiply parentheses

3u-36-15=0

We add all the numbers together, and all the variables

3u-51=0

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

3u=51

u=51/3

u=17

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