Exercise

$x÷\left(y+z\right)=x÷y+x÷z$

What number should be added to $\frac{-3}{4}$ to get $\frac{+7}{6}$?

Find the absolute value of $-1÷\frac{-1}{5}÷\frac{1}{-5}÷\frac{-1}{-5}$.

Find the multiplicative inverse, i.e., the reciprocal of $\frac{4}{5}\times \frac{15}{8}$.

Verify the following:

Find the multiplicative inverse, i.e., the reciprocal of $\frac{11}{20}$.

Verify the commutative property of multiplication for the given pairs of rational number.

$7$ and $\frac{-6}{7}$

Find the measure of $\angle ADC$.