7u-9=4(u-9)

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Solution for 7u-9=4(u-9) equation:



7u-9=4(u-9)
We move all terms to the left:
7u-9-(4(u-9))=0
We calculate terms in parentheses: -(4(u-9)), so:
4(u-9)
We multiply parentheses
4u-36
Back to the equation:
-(4u-36)
We get rid of parentheses
7u-4u+36-9=0
We add all the numbers together, and all the variables
3u+27=0
We move all terms containing u to the left, all other terms to the right
3u=-27
u=-27/3
u=-9

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