Question

18:7,2=3,5:1,4 ВЕРНА ЛИ ПРОПОРЦИЯ?28:5,6=24:4,8 ВЕРНА ЛИ ПРОПОРЦИЯ?

Answer 1

1) да потому что 2,5=2,5
2)тоже верна потому что 5=5

Answer 2

To check if the given proportions are correct, we need to calculate the value of both sides and see if they are equal. Let's solve each proportion step by step:

1. First Proportion: 18:7,2 = 3,5:1,4

To solve this, we cross-multiply the fractions:

18 * 1.4 = 25.2 7.2 * 3.5 = 25.2

The result of both sides is 25.2, so the first proportion is true.

2. Second Proportion: 28:5,6 = 24:4,8

Again, we cross-multiply the fractions:

28 * 4.8 = 134.4 5.6 * 24 = 134.4

The result of both sides is 134.4, so the second proportion is also true.

In conclusion, both proportions are true:

18:7,2 = 3,5:1,4 28:5,6 = 24:4,8