Question

1)2:3/5+3/5:2+1.1/2:6+6:1.1/22)10.79:8.3*0.7-0.46*3.15*6.9

Answer 1

1) равно 9 целых  109дробь165
2)-9 целых 4259дробь40000
я не уверен в правильности ответа

Answer 2

To solve the given expressions, let's go step by step:

1. 2:3/5 + 3/5:2 + 1.1/2:6 + 6:1.1/22

To simplify this expression, we'll follow the order of operations, which is commonly known as PEMDAS (Parentheses, Exponents, Multiplication and Division from left to right, Addition and Subtraction from left to right).

First, let's simplify the divisions:

2:3/5 = 2 * 5/3 = 10/3 3/5:2 = 3/5 * 1/2 = 3/10 1.1/2:6 = 1.1/2 * 1/6 = 1.1/12 6:1.1/22 = 6 * 22/1.1 = 120

Now, let's sum up the simplified divisions:

10/3 + 3/10 + 1.1/12 + 120

To add these fractions, we need a common denominator. The least common multiple (LCM) of 3, 10, and 12 is 60. Let's convert the fractions:

10/3 = (10/3) * (20/20) = 200/60 3/10 = (3/10) * (6/6) = 18/60 1.1/12 = (1.1/12) * (5/5) = 5.5/60

Now, we can add the fractions:

200/60 + 18/60 + 5.5/60 + 120

Combining the fractions:

(200 + 18 + 5.5)/60 + 120

Calculating the numerator:

223.5/60 + 120

Now, let's convert the mixed fraction to a decimal:

223.5/60 ≈ 3.725

Adding the decimals:

3.725 + 120 ≈ 123.725

Therefore, the result of the first expression is approximately 123.725.

2. 10.79:8.3 * 0.7 - 0.46 * 3.15 * 6.9

Again, we'll follow the order of operations.

Let's simplify the divisions:

10.79:8.3 = 10.79 / 8.3 ≈ 1.299

Now, let's multiply the remaining values:

1.299 * 0.7 - 0.46 * 3.15 * 6.9

Calculating the products:

1.299 * 0.7 ≈ 0.9093 0.46 * 3.15 * 6.9 ≈ 9.5117

Now, subtracting:

0.9093 - 9.5117 ≈ -8.6024

Therefore, the result of the second expression is approximately -8.6024.