7+4u=-9

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Solution for 7+4u=-9 equation: 



7+4u=-9

We move all terms to the left:

7+4u-(-9)=0

We add all the numbers together, and all the variables

4u+16=0

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

4u=-16

u=-16/4

u=-4

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