Question

5/9+2/9×1/9+4/9 7/20+4/20+1/20+2/20 7/8-1/8×5/8-2/8 8/30+3/30×8/30+2/30

Answer 1

Вот вроде должно быть правильно

Answer 2

Let's simplify each of the expressions step by step:

1. 5/9 + (2/9) × (1/9) + 4/9: Multiplying the fractions: (2/9) × (1/9) = 2/81 Adding the fractions: 5/9 + 2/81 + 4/9 = 45/81 + 2/81 + 36/81 = (45 + 2 + 36)/81 = 83/81

2. 7/20 + 4/20 + 1/20 + 2/20: Adding the fractions: 7/20 + 4/20 + 1/20 + 2/20 = 14/20 + 4/20 + 1/20 + 2/20 = 21/20

3. 7/8 - (1/8) × (5/8) - 2/8: Multiplying the fractions: (1/8) × (5/8) = 5/64 Subtracting the fractions: 7/8 - 5/64 - 2/8 = 56/64 - 5/64 - 16/64 = (56 - 5 - 16)/64 = 35/64

4. 8/30 + (3/30) × (8/30) + 2/30: Multiplying the fractions: (3/30) × (8/30) = 24/900 = 2/75 Adding the fractions: 8/30 + 2/75 + 2/30 = 200/750 + 20/750 + 50/750 = (200 + 20 + 50)/750 = 270/750 = 9/25

Therefore, the simplified values of the given expressions are:

1. 5/9 + (2/9) × (1/9) + 4/9 = 83/81
2. 7/20 + 4/20 + 1/20 + 2/20 = 21/20
3. 7/8 - (1/8) × (5/8) - 2/8 = 35/64
4. 8/30 + (3/30) × (8/30) + 2/30 = 9/25