Ответ: 1.
1)\frac{14-4-7}{28}=\frac{3}{28}.=>2)\frac{99-58-14}{42}=\frac{27}{42}=\frac{9}{14}.=>3)\frac{3}{28}:\frac{9}{14}=\frac{3}{28}*\frac{14}{9}=\frac{1}{6}=>4)5,3*0,7=3,71=>5)-1,04:0,8=-1,3=>6)3,71+1,29=5.=>7)7,3-1,3=6.=>8) [tex]5:6=\frac{5}{6}" alt="\frac{\frac{1}{2}-\frac{1}{7}-\frac{1}{4}}{2\frac{5}{14}-1\frac{8}{21}-\frac{1}{3}}+\frac{5,3*0,7+1,29}{7,3-1,04:0,8}=>1)\frac{14-4-7}{28}=\frac{3}{28}.=>2)\frac{99-58-14}{42}=\frac{27}{42}=\frac{9}{14}.=>3)\frac{3}{28}:\frac{9}{14}=\frac{3}{28}*\frac{14}{9}=\frac{1}{6}=>4)5,3*0,7=3,71=>5)-1,04:0,8=-1,3=>6)3,71+1,29=5.=>7)7,3-1,3=6.=>8) [tex]5:6=\frac{5}{6}" align="absmiddle" class="latex-formula">=>9)