Question

(5-11 7/8*2,5):0,0625​

Answer 1

$(5 - 11 \frac{7}{8} \times 2.5) \div 0.0625=-389$

1)

$11 \frac{7}{8} \times 2 \frac{5}{10} = \frac{95}{8} \times \frac{25}{10} = \\ = \frac{95 \times 25}{8 \times 10} = \frac{95 \times 5}{8 \times 2} = \frac{475}{16} = \\ = 29 \frac{11}{16}$

2)

$5 - 29 \frac{11}{16} = 4 \frac{16}{16} - 29 \frac{11}{16} = - 24 \frac{5}{16}$

3)

$- 24 \frac{5}{16} \div \frac{625}{10000} = - \frac{389}{16} \times \frac{10000}{625} =$

= -389 ×16/16 = -389.