Question

$\mathrm{p}$ and $\mathrm{q}$ are integers such that $\mathrm{p}$ is the predecessor of $\mathrm{q}$. Find the value of $\mathrm{p}-\mathrm{q}$.

Answer 1

Finding the value of expression

It is given that $\mathrm{p}$ is the predecessor of $\mathrm{q}$

i.e., $\mathrm{p}=\mathrm{q}-1$

Now, $\mathrm{p}-\mathrm{q}$ $=\left(\mathrm{q}-1\right)-\mathrm{q}=\mathrm{q}-1-\mathrm{q}=-1$

Hence, the value of $\mathrm{p}-\mathrm{q}$ is $-1$