Question

А) (1\2:3\4-4\9) б)1\2:3\8-4\9:3\5 п-помогите пожалуйста !

Answer 1

Вот
1/2÷3/4- 4/9 = 1/2 × 4/3 - 4/9 = (2 и 4 будет снижена ) 2/3 - 4/9 = 6/9- 4/9 = 2/9;

Answer 2

a) (1/2 : 3/4 - 4/9)

To solve this expression, let's break it down step by step.

First, let's simplify the division: 1/2 divided by 3/4. To divide fractions, we multiply the first fraction by the reciprocal of the second fraction. So, we have:

(1/2) : (3/4) = (1/2) * (4/3)

Multiplying the numerators and denominators, we get:

(1 * 4) / (2 * 3) = 4/6

Now, let's simplify the subtraction: 4/6 minus 4/9. To subtract fractions, we need a common denominator. In this case, the least common denominator is 18. So, we have:

(4/6) - (4/9) = (4/6) * (3/3) - (4/9) * (2/2)

Multiplying the numerators and denominators, we get:

(12/18) - (8/18) = 4/18

Simplifying the fraction, we have:

4/18 = 2/9

Therefore, the value of (1/2 : 3/4 - 4/9) is 2/9.

b) 1/2 : 3/8 - 4/9 : 3/5 + p

Let's simplify this expression step by step.

First, let's simplify the division: 1/2 divided by 3/8. To divide fractions, we multiply the first fraction by the reciprocal of the second fraction. So, we have:

(1/2) : (3/8) = (1/2) * (8/3)

Multiplying the numerators and denominators, we get:

(1 * 8) / (2 * 3) = 8/6

Simplifying the fraction, we have:

8/6 = 4/3

Next, let's simplify the division: 4/9 divided by 3/5. Again, we multiply the first fraction by the reciprocal of the second fraction. So, we have:

(4/9) : (3/5) = (4/9) * (5/3)

Multiplying the numerators and denominators, we get:

(4 * 5) / (9 * 3) = 20/27

Now, let's add the fractions: 4/3 + 20/27. To add fractions, we need a common denominator. In this case, the least common denominator is 27. So, we have:

(4/3) + (20/27) = (4/3) * (9/9) + (20/27)

Multiplying the numerators and denominators, we get:

(36/27) + (20/27) = 56/27

Finally, we add the variable p to the fraction: 56/27 + p.

Therefore, the simplified expression is 56/27 + p.

Please let me know if there's anything else I can help you with!