Question Number 11284 by suci last updated on 19/Mar/17
$${a}+\mathrm{2}{b}+\mathrm{3}{c}….\left(\mathrm{1}\right) \\ $$$$−\mathrm{3}{a}−\mathrm{4}{b}+\mathrm{2}{c}….\left(\mathrm{2}\right) \\ $$$$\mathrm{2}{a}−{b}−{c}….\left(\mathrm{3}\right) \\ $$$${a}=…?? \\ $$$${b}=…?? \\ $$$${c}=…?? \\ $$