12u+3u=63

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Solution for 12u+3u=63 equation: 



12u+3u=63

We move all terms to the left:

12u+3u-(63)=0

We add all the numbers together, and all the variables

15u-63=0

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

15u=63

u=63/15

u=4+1/5

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