[tex]\begin{gathered} 1)\text{ } \\ \frac{5}{9}-\frac{3}{6}=\frac{(5)(6)-(9)(3)}{(9)(6)}=\frac{30-27}{54}=\frac{3}{54}\approx0 \\ \\ \frac{5}{9}-\frac{3}{6}\approx0 \\ \\ 2) \\ \frac{1}{2}+\frac{5}{6}=\frac{(1)(6)+(2)(5)}{(2)(6)}=\frac{6+10}{12}=\frac{16}{12}=\frac{4}{3}\approx1 \\ \\ \frac{1}{2}+\frac{5}{6}\approx1 \end{gathered}[/tex]
