7u-4u=-18

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Solution for 7u-4u=-18 equation: 



7u-4u=-18

We move all terms to the left:

7u-4u-(-18)=0

We add all the numbers together, and all the variables

3u+18=0

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

3u=-18

u=-18/3

u=-6

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