7+9u=-2

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Solution for 7+9u=-2 equation:



7+9u=-2
We move all terms to the left:
7+9u-(-2)=0
We add all the numbers together, and all the variables
9u+9=0
We move all terms containing u to the left, all other terms to the right
9u=-9
u=-9/9
u=-1

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