Question

1) 2 1/7: (1,5а) = 5/14÷0,8​

Answer 1

Ответ:

Пошаговое объяснение:

2 1/7: (1,5а) = 5/14÷0,8

2 1/7:(1,5а)= 5/14*5/4

2 1/7:(1,5а)= 25/56

1,5а=15/7*56/25

1,5=24/5

1,5а= 4,8

а=3,2

Answer 2

Let's break down the expression step by step:

1. Convert 2 1/7 to an improper fraction: 2 1/7 = (2 * 7 + 1)/7 = 15/7

2. Now, we have: 15/7 : (1,5a) = 5/14 ÷ 0.8

3. Divide 15/7 by (1,5a):

(15/7) / (1,5a) = (15/7) / (1.5a)

To divide fractions, you can multiply by the reciprocal of the second fraction:

(15/7) * (1 / (1.5a))

4. Simplify the expression:

(15/7) * (1 / (1.5a)) = (15/7) * (2/3a)

5. Now, you have:

(15/7) * (2/3a)

6. Next, let's simplify the multiplication:

(15/7) * (2/3a) = (15 * 2) / (7 * 3a) = 30 / (21a)

7. Finally, simplify further if possible:

30 / (21a) = 10 / (7a)

So, the simplified expression is 10/(7a).