Question

(3 9/20+2,75):2 (37 1/5-6/8):8(61,68-4 2/25):12​

Answer 1

Ответ:

Пошаговое объяснение:

(3 9/20+2,75)/2=(3,45+2,75)/2=6,2/2=3,1

1)371:5=74,2

2)74,2-6,8=67,4

3)67,4:8=8,425

57,48/25/12

1437/25/25/12

Answer 2

To solve this expression, let's break it down step by step:

1. Simplify the fractions within parentheses:

   $3\ \frac{9}{20} + 2.75 = 3\ \frac{18}{40} + 2.75 = 3\ \frac{9}{20} + 2.75 = 3.45$

   $37\ \frac{1}{5} - \frac{6}{8} = 37\ \frac{8}{40} - \frac{6}{8} = 37\ \frac{8}{40} - \frac{30}{40} = 37\ \frac{-22}{40} = 37\ -\ \frac{11}{20} = 36\ \frac{9}{20}$

   $61.68 - 4\ \frac{2}{25} = 61.68 - 4\ \frac{10}{25} = 61.68 - 4\ \frac{2}{5} = 61.68 - 8.4 = 53.28$

2. Perform the operations within parentheses:

   $3.45 + 2.75 = 6.2$

   $36\ \frac{9}{20} \div 8 = 36\ \frac{9}{160}$

   $53.28 \div 12 = 4.44$

3. Finally, divide $6.2$ by $4.44$:

   $\frac{6.2}{4.44} \approx 1.396$

So, the value of the given expression is approximately $1.396$.