Multiple choice

Let the solution of the equation 2k + 4 = - 8 and the solution of the equation 3s + 5 = 8. Then, the value of 2k + 3s is

    • 11
    • 9

  3. 13

  4. 15

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

2k + 4 = - 8 => 2k = - 12                      => k = - 6

Also, 3s + 5 = 8  => 3s = 3                               => s = 1

Therfore, 2 x (- 6) + 3 x 1 = - 12 + 3 x 1 = - 9

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