Question

Can someone explain how to do this from step by step in order to get marked.

Answer 1

Step-by-step explanation:

First, convert the mixed fraction into an improper fraction:

$1\dfrac{2}{5} = \dfrac{7}{5}$

Rewrite 2 as 2/1 and then cross-multiply to combine:

$\dfrac{2}{1} - \dfrac{7}{5} = \dfrac{(2)(5) - (7)(1)}{(1)(5)} = \dfrac{10 - 7}{5} = \dfrac{3}{5}$