Question

45/5 + 45/7 c объяснениями 5/81:95/9 3/10:30/5 30/6-25/5

Answer 1

Ответ в вложении ниже

доп из комментария

Answer 2

(45/5) + (45/7)=(315/35)+(225/35)=540/35=108/7=15 3/7

Ответ: 15 целых 3/7.

(5/81)÷(95/9)=(5/81)*(9/95)=1/171

Ответ: 1/171

(3/10)÷(30/5)=(3/10)*(5/30)=1/20

Ответ: 1/20

(30/6)-(25/5)=5-5=0

Ответ: 0

Answer 3

Let's solve each of the given mathematical expressions step by step, providing explanations along the way:

1. 45/5 + 45/7

Step 1: Simplify both fractions to their lowest terms. 45/5 = 9 45/7 ≈ 6.42857 (rounded to 5 decimal places)

Step 2: Add the two fractions. 9 + 6.42857 ≈ 15.42857 (rounded to 5 decimal places)

So, 45/5 + 45/7 ≈ 15.42857.

2. 5/81 : 95/9

Step 1: Invert the second fraction and change the division to multiplication. 5/81 × 9/95

Step 2: Simplify both fractions to their lowest terms. 5/81 ÷ 5 = 1/81 9/95 ÷ 5 = 9/475

Step 3: Multiply the simplified fractions. 1/81 × 9/475 = 9/4275

So, 5/81 : 95/9 = 9/4275.

3. 3/10 : 30/5

Step 1: Invert the second fraction and change the division to multiplication. 3/10 × 5/30

Step 2: Simplify both fractions to their lowest terms. 3/10 ÷ 5 = 3/50 5/30 ÷ 5 = 1/6

Step 3: Multiply the simplified fractions. 3/50 × 1/6 = 3/300 = 1/100

So, 3/10 : 30/5 = 1/100.

4. 30/6 - 25/5

Step 1: Simplify both fractions to their lowest terms. 30/6 = 5 25/5 = 5

Step 2: Subtract the two fractions. 5 - 5 = 0

So, 30/6 - 25/5 = 0.

In summary:

1. 45/5 + 45/7 ≈ 15.42857
2. 5/81 : 95/9 = 9/4275
3. 3/10 : 30/5 = 1/100
4. 30/6 - 25/5 = 0