42=3(u+6)

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Solution for 42=3(u+6) equation:



42=3(u+6)
We move all terms to the left:
42-(3(u+6))=0
We calculate terms in parentheses: -(3(u+6)), so:
3(u+6)
We multiply parentheses
3u+18
Back to the equation:
-(3u+18)
We get rid of parentheses
-3u-18+42=0
We add all the numbers together, and all the variables
-3u+24=0
We move all terms containing u to the left, all other terms to the right
-3u=-24
u=-24/-3
u=+8

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