12u-12u+4u+3u=7

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Solution for 12u-12u+4u+3u=7 equation: 



12u-12u+4u+3u=7

We move all terms to the left:

12u-12u+4u+3u-(7)=0

We add all the numbers together, and all the variables

7u-7=0

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

7u=7

u=7/7

u=1

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