Question

Find the difference $:$

$\frac{3}{5}-\frac{1}{7}$

Answer 1

Step 1 Find the L.C. M ( Least common multiple ) of denominators of given fractions

L.C.M $(5,7)$ $=35$

Step 2 Make the equivalent fraction by keeping denominator same $=$ $35$ and then subtract it

$\frac{3}{5}-\frac{1}{7}$ $=\frac{3\times 7-1\times 5}{35}$

$\Rightarrow \frac{21-5}{35}=\frac{16}{35}$

Therefore, $\frac{3}{5}-\frac{1}{7}$ is $\frac{16}{35}$