Question

ac{2}{5}" alt="\frac{7}{10} - \frac{2}{5}" align="absmiddle" class="latex-formula">

Answer 1

Find the LCD (lowest common denominator) of 10 and 5.
LCD of 10 and 5 is 10.
5 x 2 = 10 so, 2 x 2 = 4 because whatever you do to the denominator, you do to the numerator.
7/10 - 4/10 = 3/10

Answer 2

Answer:

$\frac{3}{10}$

Step-by-step explanation:

First, we need to make the denominators the same.

$\frac{7}{10} -\frac{2}{5} =\frac{7}{10} -\frac{2*2}{5*2}=\frac{7}{10} -\frac{4}{10}$

Then, we subtract the numerator.

$\frac{7}{10} -\frac{4}{10} =\frac{3}{10}$