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  • If 3k - 21 = 6k - 42, then the value of z in 2z + 2 = k w...
Multiple choice

If 3k - 21 = 6k - 42, then the value of z in 2z + 2 = k will be

    • 5
    • 9
  1. 5

  2. 2.5

  3. None of these

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

3k - 21 = 6k - 42 Or 3k = 21 Or k = 7 Now, 2z + 2 = k Or 2z + 2 = 7 Or 2z = 5 Or z = 2.5

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