7u-9=-9+7u

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Solution for 7u-9=-9+7u equation:



7u-9=-9+7u
We move all terms to the left:
7u-9-(-9+7u)=0
We add all the numbers together, and all the variables
7u-(7u-9)-9=0
We get rid of parentheses
7u-7u+9-9=0
We add all the numbers together, and all the variables
=0
u=0/1
u=0

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