1)
\left\{{{x_1=2}\atop{x_2=-1}}\right." alt="\left\{{{x-2=0}\atop{x+1=0}}\right.=>\left\{{{x_1=2}\atop{x_2=-1}}\right." align="absmiddle" class="latex-formula">
Ответ: {-1; 2}
2)
\left\{{{x_1=1}\atop{x_2=\frac{2}{3}}}\right." alt="\left\{{{x-1=0}\atop{3x-2=0}}\right.=>\left\{{{x_1=1}\atop{x_2=\frac{2}{3}}}\right." align="absmiddle" class="latex-formula">
Ответ: {}