SOLUTION: Find the value of 8u-7 given that -7u-9=5

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Question 1010821: Find the value of 8u-7 given that -7u-9=5
Answer by ikleyn(52778) About Me  (Show Source):
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Find the value of 8u-7 given that -7u-9=5
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-7u - 9 = 5 implies that -7u = 5 + 9 = 14. Hence, u = 14%2F%28-7%29 = -2.

Now you can easily calculate 8u -7.

It is 8*(-2) - 7 = -23.