Question

найдите значения выражений:
1) 2 целых 1/6 : (8 целых 3/4-5 целых 1/2)
2) 3 целых 17/20 : (3 целых 2/5+1 целая 11/15)
3) (4 целых 3/5 - 2 целых 1/5) : 1 целая 1/10

Answer 1

$[tex]2 \frac{1}{6} \div (8 \frac{3}{4} - 5 \frac{1}{2} ) = 2 \frac{1}{6} \div (8 \frac{3}{4} - 5 \frac{2}{4} ) = 2 \frac{1}{6} \div 3 \frac{1}{4} = \frac{13}{6} \times \frac{4}{13} = \frac{2}{3}$
$3 \frac{17}{20} \div (3 \frac{2}{5} + 1 \frac{11}{15}) = \frac{77}{20} \times \frac{15}{77} = \frac{15}{20} = \frac{3}{4}$
$(4 \frac{3}{5} - 2 \frac{1}{5} ) \div 1 \frac{1}{10} = 2 \frac{2}{5} \times \frac{10}{11} = \frac{12}{5} \times \frac{10}{11} = \frac{24}{11} = 2 \frac{2}{11}$