3u+4=4u-3

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



3u+4=4u-3

We move all terms to the left:

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

We get rid of parentheses

3u-4u+3+4=0

We add all the numbers together, and all the variables

-1u+7=0

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

-u=-7

u=-7/-1

u=+7

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