第23页

信息发布者:
$=(\dfrac{3}{4}+\dfrac{1}{4})+(\dfrac{7}{9}+\dfrac{1}{9})$
$=1+\dfrac{8}{9}$
$=1\dfrac{8}{9}$
$=\dfrac{19}{11}-\dfrac{8}{11}+\dfrac{2}{3}$
$=1+\dfrac{2}{3}$
$=1\dfrac{2}{3}$
$=\dfrac{5}{8}-\dfrac{3}{8}+\dfrac{1}{6}+\dfrac{5}{6}$
$=\dfrac{1}{4}+1$
$=1\dfrac{1}{4}$
$=(\dfrac{6}{13}+\dfrac{7}{13})-(\dfrac{3}{7}+\dfrac{4}{7})$
$=1-1$
$=0$
$\dfrac{2}{5}+\dfrac{1}{2}=\dfrac{9}{10}$
$1-\dfrac{9}{10}=\dfrac{1}{10}$
答:两个月一共绣了整幅作品的$\dfrac{9}{10},$还剩下$\dfrac{1}{10}$没绣。
$\dfrac{13}{48}$
$\dfrac{1}{16}$
小麦粉占总利润的比例:
$\dfrac{13}{16}-\dfrac{7}{24}-\dfrac{1}{4}$
$=\dfrac{39}{48}-\dfrac{14}{48}-\dfrac{12}{48}$
$=\dfrac{13}{48}$
蛋类总占比:$1-\dfrac{13}{16}=\dfrac{3}{16}$
松花蛋占总利润的比例:
$\dfrac{3}{16}-\dfrac{1}{8}$
$=\dfrac{3}{16}-\dfrac{2}{16}$
$=\dfrac{1}{16}$