Question

вычислите 1,8 * (5/6 - 0,7)- 1 4/5 : 7,5

Answer 1

1,8*(5/6-0,7)-1 4/5:7,5

1)5/6-0,7=5/6-7/10=25/30-21/30=4/30=2/15

2)18/10*2/15=6/25

3)9/5:75/10=9/5*10/75=6/25

4)6/25-6/25=0

Answer 2

2)18/10*2/15=6/25 (!)

Answer 3

Здравствуйте!
$1.8 times( frac{5}{6} - 0.7) - 1 frac{4}{5} div 7.5 = 1frac{8}{10} times ( frac{5}{6} - frac{7}{10} ) - frac{9}{5} div 7 frac{5}{10} = frac{18}{10} times ( frac{25}{30} - frac{21}{30} ) - frac{9}{5} times frac{10}{75} = frac{18 times 4}{10 times 30} - frac{9 times 10}{5 times 75} = frac{3 times 2}{5 times 5} - frac{3 times 2}{25} = frac{6}{25} - frac{6}{25} = 0$

Answer 4

Идеальный ответ