Question

Jason made the following calculations. Explain the errors Jason made. Give the correct answers.

a. 1/3 + 3/5 = 4/8
b. 11/12 - 5/6 =1

Answer 1

a. 1/3+3/5 =14/15

b. 11/12 - 5/6 =1/12

Explanation:

The error in number 1 is the that the L.C.M of 3 and 5 is 15 and not 8.

In number 2, I think Jason didn't look for the L.C.M before he solved.