Question

4,5:(3x)=4:28(2x):9=2целых 1/3:5 целых 1/4​

Answer 1

Ответ:

21/2

21/40

Чисто символы

Answer 2

It seems like you're trying to solve a proportion problem. Let's break it down step by step.

You have the proportion:

4,5 : (3x) = 4 : 28(2x) : 9 = 2 1/3 : 5 1/4

Let's first simplify the middle part of the proportion:

4 : 28(2x) : 9

To simplify this, you can divide all three numbers by the greatest common divisor, which is 4:

4 ÷ 4 : (28(2x) ÷ 4) : 9 ÷ 4 1 : (14x) : 9/4

Now, let's deal with the mixed numbers on the right side of the proportion:

2 1/3 : 5 1/4

To work with mixed numbers, convert them to improper fractions:

2 1/3 = 7/3 5 1/4 = 21/4

Now, we can rewrite the proportion:

4,5 : (3x) = 1 : (14x) : 9/4 = 7/3 : 21/4

To solve for x, we can cross-multiply and then solve for x:

(4.5) * (21/4) = (3x) * (7/3)

Now, calculate the products:

(4.5) * (21/4) = 94.5/4 (3x) * (7/3) = 7x

Now, equate these two expressions:

94.5/4 = 7x

To solve for x, multiply both sides by 4/7:

x = (94.5/4) * (4/7)

x = 94.5/7

Now, simplify the fraction:

x = 13.5

So, the value of x is 13.5.