Question

What is the value of this expression when c = 6?
3c - 4 / 2

A.
14

B.
11

C.
7

D.
5

I did 3c - 4 / 2 = 3(6) - 4 / 2 = 18 - 4 / 2 = 14 / 2 = 7.
Am I correct?

Answer 1

I did 3*6 - 4/2 = 18 - 2 = 16 because the problem implies 3c - (4/2).

You did 3c - 4 / 2 = 3(6) - 4 / 2 = 18 - 4 / 2 = 14 / 2 = 7 because you thought the problem implied [3c - 4] / 2.

Grouping symbols are essential for clarity in mathematics.