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)

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

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 :

$2.5123(2.6)$