1.计算下面各题,能简算的要简算。
$\frac{4}{17}+\frac{10}{17}-\frac{5}{17}$
$\frac{2}{3}+\frac{4}{5}+\frac{5}{6}$
$\frac{1}{6}+\frac{4}{5}-\frac{9}{10}$
$\frac{4}{5}-\frac{1}{2}+\frac{2}{3}$
$1\frac{5}{7}-(\frac{7}{8}-\frac{2}{7})$
$1\frac{2}{5}-(\frac{7}{12}-\frac{1}{4})-\frac{2}{3}$
$\frac{8}{9}-\frac{5}{12}+\frac{1}{6}$
$\frac{13}{18}+(\frac{2}{3}-\frac{1}{2})$
$\frac{1}{2}+[\frac{5}{6}-(\frac{1}{3}-0.25)]$
$\frac{1}{6}+\frac{5}{9}+\frac{5}{6}$
$\frac{21}{17}-(\frac{4}{17}+\frac{1}{4})$
$0.25+\frac{2}{9}+\frac{7}{9}+\frac{3}{4}$
$8-\frac{4}{27}-\frac{23}{27}$
$\frac{11}{16}+(\frac{5}{16}+\frac{5}{6})$
$3.75-0.125+6.25-\frac{7}{8}$

1.$\frac{9}{17}$
$\frac{23}{10}$
$\frac{1}{15}$
$\frac{29}{30}$
$1\frac{1}{8}$
$\frac{2}{5}$
$\frac{23}{36}$
$\frac{8}{9}$
$\frac{5}{4}$
$1\frac{5}{9}$
$\frac{3}{4}$
$2$
$7$
$1\frac{5}{6}$
$9$