Question

Examine the work shown. Explain the error and find the correct result.

2(4 – 16) – (–30)
2(–12) – (–30)
24 – (–30)
54

Answer 1

Answer: The product of two numbers with different signs is negative, so 2(-12) = -24, not 24. Then -24 — (-30) = -24 + 30 = 6.

Explanation:

Sample response

Answer 2

see below

Explanation:

2(4 – 16) – (–30)

2(–12) – (–30)

2 * -12 is -24 not 24

-24 – (–30)

-24+30

6