S K Khanuja Solutions for Chapter: Multiplication, Exercise 1: Exercise 15

Express the simplified form of $\left(\frac{13}{8}\times \frac{12}{13}\right)+\left(\frac{-4}{9}\times \frac{3}{-2}\right)$ in mixed number.

Simplify

$\left(\frac{16}{15}\times \frac{-25}{8}\right)-\left(\frac{-14}{27}\times \frac{3}{7}\right)$

Simplify:

$\left(\frac{6}{55}\times \frac{-22}{9}\right)-\left(\frac{26}{125}\times \frac{-10}{39}\right)$

If $\left(\frac{-12}{7}\times \frac{14}{27}\right)-\left(\frac{-8}{45}\times \frac{9}{16}\right)=k$, then find the value of $-90k$.

If the reciprocal of $\frac{13}{7}$ is $\frac{x}{y}$, then find $x-y$.

Find the reciprocal of $\frac{-9}{11}$.

Find the reciprocal of 

$-8$

Find the reciprocal of 

$\frac{13}{-17}$