Question Number 187713 by Noorzai last updated on 20/Feb/23
Commented by Noorzai last updated on 20/Feb/23
$${please}\:{soluation} \\ $$
Answered by mahdipoor last updated on 20/Feb/23
$$\frac{\mathrm{1}}{\mathrm{5}}+\frac{\mathrm{1}}{\mathrm{7}}+\frac{\mathrm{1}}{\mathrm{11}}=\frac{\mathrm{1}}{\mathrm{2}}\left(\frac{\mathrm{2}}{\mathrm{5}}+\frac{\mathrm{2}}{\mathrm{7}}+\frac{\mathrm{2}}{\mathrm{11}}\right)= \\ $$$$\frac{\mathrm{1}}{\mathrm{2}}\left(\left(\mathrm{1}−\frac{\mathrm{3}}{\mathrm{5}}\right)+\left(\mathrm{2}−\frac{\mathrm{12}}{\mathrm{7}}\right)+\left(\mathrm{2}−\frac{\mathrm{20}}{\mathrm{11}}\right)\right)= \\ $$$$\frac{\mathrm{1}}{\mathrm{2}}\left(\mathrm{5}−\left(\frac{\mathrm{3}}{\mathrm{5}}+\frac{\mathrm{12}}{\mathrm{7}}+\frac{\mathrm{20}}{\mathrm{11}}\right)\right)=\frac{\mathrm{5}−{x}}{\mathrm{2}} \\ $$
Commented by Noorzai last updated on 21/Feb/23
$${thanks} \\ $$