Вычислите:    5        3     7 4 6  -(2  8+  12)       1      2     3 6  4-(3  5 +  8)

[latex]4\frac{5}{6}-(2 \frac{3}{8}+\frac{7}{12})=1\frac{7}{8}[/latex]   1) [latex]2 \frac{3}{8}+\frac{7}{12}=\frac{19}{8}+\frac{7}{12}=\frac{57+14}{24}=\frac{71}{24}=2\frac{23}{24}[/latex]   2) [latex]4\frac{5}{6}-2\frac{23}{24}=\frac{29}{6}-\frac{71}{24}=\frac{116-71}{24}=\frac{45}{24}=\frac{15}{8}=1\frac{7}{8}[/latex] ===================================================================== [latex]6\frac{1}{4}-(3\frac{2}{5}+\frac{3}{8})=2\frac{19}{40}[/latex]   1) [latex]3\frac{2}{5}+\frac{3}{8}=\frac{17}{5}+\frac{3}{8}=\frac{136+15}{40}=\frac{151}{40}=3\frac{31}{40}[/latex]   2) [latex]6\frac{1}{4}-3\frac{31}{40}=\frac{25}{4}-\frac{151}{40}=\frac{250-151}{40}=\frac{99}{40}=2\frac{19}{40}[/latex]