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18 votes
18 votes
Find the value of u -8 given that -7u-5=2

User Kemdo
by
2.6k points

2 Answers

30 votes
30 votes

The answer is -9.

First, let's find the value of u.

  • -7u - 5 = 2
  • -7u = 7
  • u = -1

Now, substitute in the expression.

  • u - 8
  • (-1) - 8
  • -9

User Anansa
by
3.1k points
12 votes
12 votes

Answer: u - 8 = -9

Explanation:

Given equation

-7u - 5 = 2

Add 5 on both sides

-7u - 5 + 5 = 2 + 5

-7u = 7

Divide -7 on both sides

-7u / (-7) = 7 / (-7)

u = -1

Substitute values into the goal expression

u - 8 = (-1) - 8 =
\Large\boxed{-9}

Hope this helps!! :)

Please let me know if you have any questions

User Narendra Kothule
by
2.8k points