Question

Find $\frac{{6.5}^2-{5.3}^2}{6.5+5.3}=\frac{7}{m}$.Find $m$

Answer 1

$\frac{6.5^2-5.3^2}{6.5+5.3}=\frac{7}{m}$

$\Rightarrow \frac{5.3(2.5-3)}{5.3(2+1)}=\frac{7}{m}$

$\Rightarrow \frac{10-3}{3}=\frac{7}{m}$

$\Rightarrow \frac{7}{3}=\frac{7}{m}$

$4\Rightarrow m=3$

Hence, the correct answer is 3.