Question

20:2 2/15+25 5/7:1 1/35

Answer 1

20 : 2 2/15 + 25 5/7 : 1 1/35 = 34 целых 3/8

1) 20 : 2 2/15 = 20 : 32/15 = 20/1 * 15/32 = (5*15)/(1*8) = 75/8 = 9 3/8
2) 25 5/7 : 1 1/35 = 180/7 : 36/35 = 180/7 * 35/36 = (5*5)/(1*1) = 25
3) 9 3/8 + 25 = 34 3/8

Пояснения:
2 целых 2/15 = (2*15+2)/15 = 32/15
25 целых 5/7 = (25*7+5)/7 = 180/7
1 целая 1/35 = (1*35+1)/35 = 36/35

Answer 2

To solve the expression, follow the order of operations (PEMDAS/BODMAS):

1. Parentheses/Brackets
2. Exponents/Orders
3. Multiplication and Division (from left to right)
4. Addition and Subtraction (from left to right)

Let's break down the expression step by step:

1. 20:2 = 10 (Division)
2. 2/15 = 2 ÷ 15 = 0.1333... (Division)
3. 25 5/7 = 25 + 5/7 = 25.7142... (Addition)
4. 1 1/35 = 1 + 1/35 = 1.0285... (Addition)

Now, the simplified expression becomes:

10 + 0.1333... + 25.7142... + 1.0285...

Let's round the numbers to two decimal places:

10 + 0.13 + 25.71 + 1.03

Now, add all the numbers together:

10 + 0.13 + 25.71 + 1.03 = 36.87

So, the final answer is approximately 36.87.