Question Number 196302 by cortano12 last updated on 22/Aug/23
Answered by Rasheed.Sindhi last updated on 22/Aug/23
$$\mathrm{60}+\left(\mathrm{180}−{a}\right)+\left(\mathrm{180}−{b}\right)+\left(\mathrm{180}−{c}\right)=\mathrm{360} \\ $$$$\mathrm{60}+\mathrm{180}×\mathrm{3}−\mathrm{360}={a}+{b}+{c} \\ $$$${a}+{b}+{c}=\mathrm{240} \\ $$
Commented by cortano12 last updated on 22/Aug/23
$$\mathrm{yes}\:\mathrm{nice} \\ $$