Question

If the sum of two integers is - 10 and one of them is 18,then find the additive inverse of the other integers

Answer 1

$$\begin{gathered} \mathrm{Let}\mathrm{the}\mathrm{other}\mathrm{integer}\mathrm{be}\mathrm{x}. \\ \mathrm{Now},18+\mathrm{x}=-10 \\ \Rightarrow \mathrm{x}=-10-18 \\ \Rightarrow \mathrm{x}=-28 \\ \mathrm{Now},\mathrm{additive}\mathrm{inverse}\mathrm{of}-28\mathrm{is}28. \end{gathered}$$