Question

7/10*2 3/7-0.1:( 2 1/5:2 1/4-1.3: 2 1/4)

Answer 1

Ответ:

Пошаговое объяснение:

2 1/5:2 1/4=11/5*4/9=44/45

1,3:2 1/4=13/10*4/9=26/45

44/45-26/45=18/45=2/5=0,4

0,1:0,4=0,25

7/10*2 3/7=7/10*17/7=17/10=1,7

1,7-0,25=1,45

Answer 2

Let's break down the expression step by step:

1. 7/10 * 2:

   • 7/10 * 2 = 1.4

2. 3/7 - 0.1:

   • 3/7 - 0.1 = 0.428571 - 0.1 = 0.328571

3. 2 1/5 : 2 1/4:

   • To divide mixed fractions, convert them to improper fractions and then perform the division.
   • 2 1/5 = (2 * 5 + 1)/5 = 11/5
   • 2 1/4 = (2 * 4 + 1)/4 = 9/4
   • (11/5) / (9/4) = (11/5) * (4/9) = 44/45

4. 1.3 : 2 1/4:

   • 2 1/4 = 9/4
   • 1.3 / (9/4) = 1.3 * (4/9) = 5.2/9

Now, let's combine the results:

1.4 + 0.328571 - 44/45 - 5.2/9 ≈ -0.285

So, the final result of the given expression is approximately -0.285.