Verify that $\mathrm{a}÷(\mathrm{b}+\mathrm{c})\ne (\mathrm{a}÷\mathrm{b})+(\mathrm{a}÷\mathrm{c})$ for each of the following values of $\mathrm{a},\mathrm{}\mathrm{b}$ and $\mathrm{c}$: $\mathrm{a}=(-10), \mathrm{b}=1, \mathrm{c}=1$