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11 September, 00:21

Betsie tried to solve an equation step by step.

3 (a + 7) = - 33

-33

a + 7 = - 11

Step 1

a = - 4

Step 2

Find Betsie's mistake.

+4
Answers (2)
  1. 11 September, 00:28
    0
    Bestie forgot to multiply the numbers in the parentheses by three
  2. 11 September, 00:56
    0
    she didn't distribute the 3.

    Step-by-step explanation:

    3 (a + 7) = 33

    she didn't distribute the 3.

    3a + 21 = 33

    - 21 - 21

    3a = 12

    12/3 = 4

    a = 4
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