4=7u+3(u-4)

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Solution for 4=7u+3(u-4) equation:



4=7u+3(u-4)
We move all terms to the left:
4-(7u+3(u-4))=0
We calculate terms in parentheses: -(7u+3(u-4)), so:
7u+3(u-4)
We multiply parentheses
7u+3u-12
We add all the numbers together, and all the variables
10u-12
Back to the equation:
-(10u-12)
We get rid of parentheses
-10u+12+4=0
We add all the numbers together, and all the variables
-10u+16=0
We move all terms containing u to the left, all other terms to the right
-10u=-16
u=-16/-10
u=1+3/5

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