u+4u-4u-u+3u=15

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Solution for u+4u-4u-u+3u=15 equation:



u+4u-4u-u+3u=15
We move all terms to the left:
u+4u-4u-u+3u-(15)=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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