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25 votes
25 votes
Solve for u.-3(-6u+5)-3u=3(u-7)-4Simplify your answer as much as possible. =u

User Rolisz
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1 Answer

20 votes
20 votes

Explanation

We are given the following:


-3(-6u+5)-3u=3(u-7)-4

We are required to solve for u in the equation given.

This is achieved thus:


\begin{gathered} -3(-6u+5)-3u=3(u-7)-4 \\ \text{ Remove the brackets } \\ 18u-15-3u=3u-21-4 \\ 18u-3u-15=3u-25 \\ 15u-15=3u-25 \\ 15u-3u=-25+15 \\ 12u=-10 \\ (12u)/(12)=(-10)/(12) \\ u=-(5)/(6) \end{gathered}

Hence, the answer is:


u=-(5)/(6)

User Dr Herbie
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2.9k points