Question

Очень нужно!Решить не могу.
(-4,5 + 4 1/3)*(-5 1/7)+ +1 1/3:(-5,6)

Answer 1

$( - 4.5 +4\frac{1}{3} )( - 5 \frac{1}{7} ) + 1 \frac{1}{3} \div (5.6)$

1)$- 4.5 + 4 \frac{1}{3} = - \frac{45}{10} + \frac{13}{3} = - \frac{135}{30} + \frac{130}{30} = - \frac{5}{30} = - \frac{1}{6}$

2)$- \frac{1}{6} \times ( - 5 \frac{1}{7} ) = \frac{1 \times 36}{6 \times 7} = \frac{6}{7}$

3)$1 \frac{1}{3} \div (5.6) = \frac{4}{3} \div \frac{56}{10} = \frac{4 \times 10}{3 \times 56} = \frac{10}{42} = \frac{5}{21}$

4)$\frac{6}{7} + \frac{5}{21} = \frac{18}{21} + \frac{5}{21} = \frac{23}{21} = 1 \frac{2}{21}$