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

Explanation:

Third line. "24 - (-30)" has to multiply 2 with -12, so it would be "-24" and not "24".

2(4 - 16) - (-30)

2(-12) + 30

-24 + 30 = 6

Answer 2

-54

Explanation:

When you solve any equation always remember to use PEMDAS (Parentheses Exponents, Multiplication, Division, Addition and Subtraction) use also move left to right. The correct way to solve this is

2(4-16)-30

2(-12)-30

-24-30

-54

Hope this helped