Question

Amanda simplifies the following expression and shows her work below. What mistake did Amanda make that resulted in an incorrect answer?

34−8÷2 + 3∙4


34−4 + 3∙4


37 – 7 ∙ 4


34−28


6


a

She added before multiplying


b

She multiplied before dividing


c

She subtracted before adding


d

She added before dividing

Answer 1

A, She added before multiplying.

Explanation:

First, start off by using GEMDAS.

Grouping

Exponents

Multiply

Divide

Add

Subtract

You work from left to right - so you obviously divide first, which Amanda did successfully. Then, you multiply, which is exactly where Amanda went wrong. She was supposed to multiply before adding the 3 with 4.

Not sure if this made sense,