Question

Срочно решить!!!!!!

Answer 1

1)

$1)1 frac{2}{3} + 4 times (3 frac{3}{4} - frac{5}{6} ) div 6 frac{4}{11}$

решаем по действиям :

$1)3 frac{3}{4} - frac{5}{6} = frac{15}{4} - frac{5}{6} = frac{45}{12} - frac{10}{12} =$

$= frac{35}{12} = 2 frac{11}{12} .$

$2)2 frac{11}{12} div 6 frac{4}{11} = frac{35}{12} div frac{70}{11} = frac{35}{12} times frac{11}{70} =$

$= frac{385}{840} = frac{11}{24} .$

$3)4 times frac{11}{24} = frac{44}{24} = frac{11}{6} = 1 frac{5}{6} .$

$4)1 frac{2}{3} + 1 frac{5}{6} = 2 + frac{2}{3} + frac{5}{6} = 2 + frac{4}{6} + frac{5}{6} =$

$= 2 + frac{9}{6} = 2 + frac{3}{2} = 3 frac{1}{2} .$

Ответ :

$3 frac{1}{2}$

2)

$2)1 frac{11}{12} + 6 times (2 frac{5}{11} - frac{5}{8} ) div 18frac{3}{7}$

решаем по действиям :

$1)2 frac{5}{11} - frac{5}{8} = frac{27}{11} - frac{5}{8} = frac{216}{88} - frac{55}{88} = frac{161}{88} =$

$= 1 frac{73}{88} .$

$2)1 frac{73}{88} div 18 frac{3}{7} = frac{161}{88} div frac{129}{7} = frac{161}{88} times frac{7}{129} =$

$= frac{1127}{11352} .$

$3)6 times frac{1127}{11352} = frac{6762}{11352} = frac{1127}{1892} .$

$4)1 frac{11}{12} + frac{1127}{1892} = 1 + frac{11}{12} + frac{1127}{1892} = 1 +$

$+ frac{5203}{5676} + frac{3381}{5676} = 1 + frac{8584}{5676} = 1 + frac{2146}{1419} =$

$= 2 frac{727}{1419} .$

если в десятичной , то :

$2.5123(2.6)$