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Question 328355: -11=7+3u forgot the rule to solve this can you show me how its done please
Answer by jessica43(140)   (Show Source):
You can put this solution on YOUR website! To solve this problem, you want to get u by itself on one side of the problem. So first, you want to subtract 7 from each side of the problem so the 7 on the right disappears:
-11 = 7 + 3u
-11 - 7 = 7 + 3u - 7
-18 = 3u
Now divide each side by 3 to get u by itself:
-18/3 = 3u/3
-6 = 1u
-6 = u
So your answer is u = -6.
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