Question

Describe the error in the work shown below.

Find an expression equivalent to 18+30.
Factors of 18:1, 2, 3, 6, 9, 18
Factors of 30: 1, 2, 3,5, 6, 10, 15, 30
18 + 30 = 6(3 + 10)

Answer 1

The equation should be written like this

18 + 30 = 3(6 + 10)

Explanation:

The 3 and 6 should be swapped.