Question

(7/15+1/3):(1 7/30-1/3)(3/4×1/2):(1/4×3)+1/2​

Answer 1

1)8/9
2) 1
Я могу только одну фотку дать

Answer 2

Let's break down the expression step by step:

1. (7/15 + 1/3): To add these fractions, we need a common denominator, which is 15. So, we rewrite 1/3 as (5/15). (7/15 + 5/15) = 12/15

2. (1 7/30 - 1/3): To subtract these fractions, we need a common denominator, which is 30. So, we rewrite 1/3 as (10/30). (1 7/30 - 10/30) = (1 - 10/30 + 7/30) = (1 - 3/10 + 7/30) To add these fractions, we also need a common denominator of 30. (1 - 9/30 + 7/30) = (1 - 2/10 + 7/30) = (1 - 1/5 + 7/30)

3. (3/4 × 1/2): Multiply the fractions. (3/4 × 1/2) = (3/8)

4. (1/4 × 3): Multiply the fractions. (1/4 × 3) = (3/4)

5. (1/2): This is a simple fraction.

Now, we have simplified each part of the expression:

1. 12/15
2. 1 - 1/5 + 7/30
3. 3/8
4. 3/4
5. 1/2

Now, let's put the expression back together and simplify:

(12/15) : ((1 - 1/5 + 7/30) × (3/8)) : (3/4 + 1/2)

Now, let's simplify further:

(4/5) : ((4/5) × (7/30)) : (3/4 + 1/2)

Now, let's continue to simplify:

(4/5) : ((28/150)) : (3/4 + 2/4)

Now, let's simplify further by adding the fractions inside the last set of parentheses:

(4/5) : ((28/150)) : (5/4)

To divide fractions, you can multiply by the reciprocal of the second fraction:

(4/5) × (150/28) × (4/5) = (4/5) × (150/28) × (4/5) = (4/5) × (30/7)

Now, multiply the fractions:

(4/5) × (30/7) = (4/1) × (6/7) = (24/7)

So, the simplified expression is:

24/7