Question

28:2=(20+?):2=?+?=?39:3=(?+?):?=?+?=?​

Answer 1

Пошаговое объяснение:

28:2=(20+8):2=10+4=14

1. 20+8=28

2. 20÷2=10

2. 8÷2=4

39:3=(30+9):3=10+3=13

1. 30+9=39

2. 30÷3=10

3. 9÷3=3

Answer 2

Let's break down each of the equations step by step:

1. 28 ÷ 2 = (20 + ?) ÷ 2 To find the value of ?, we can first solve the left side of the equation: 28 ÷ 2 = 14

Now we have: 14 = (20 + ?) ÷ 2

To find ?, multiply both sides of the equation by 2 to isolate the expression (20 + ?): 2 * 14 = 20 + ? 28 = 20 + ?

Now, subtract 20 from both sides to find the value of ?: ? = 28 - 20 ? = 8

So, the value of ? is 8.

2. 39 ÷ 3 = (? + ?) ÷ ? Let's solve the left side of the equation first: 39 ÷ 3 = 13

Now we have: 13 = (? + ?) ÷ ?

To find ?, we need to isolate the expression (? + ?). Multiply both sides by 3: 3 * 13 = ? + ?

39 = ? + ?

Now, subtract ? from both sides to find the value of ?: ? = 39 - ? ? = 39 - ?

We can't determine the value of ? without more information. The equation doesn't provide enough information to uniquely determine the values of both ? and ?.

So, for the second equation, the values of ? and ? are indeterminate without additional information.