Question

брат и сестра собирали марки.У них вместе на 20 марок больше,чем у брата и на 12 марок больше чем у сестры.сколько марок у них вместе?

Answer 1

1)20+12=32марки-всего.

2)32-12=20марок-у сестры.

3)32-20=12марок-у брата.

Answer 2

х марок у брата

у марок у сестры

х+у=х+20

х+у-х=20

х+у-у=12

х=12 марок у брата

у=20 марок у брата

х+у=32 марок у брата и сестры.

 

Answer 3

Problem Analysis

We are given that a brother and sister collected stamps. Together, they have 20 more stamps than the brother, and the brother has 12 more stamps than the sister. We need to determine how many stamps they have together.

Solution

Let's assume the number of stamps the sister has is x.

According to the given information, the brother has 12 more stamps than the sister, so the brother has x + 12 stamps.

Together, they have 20 more stamps than the brother, so the total number of stamps they have is (x + 12) + 20.

To find the total number of stamps, we need to solve the equation:

(x + 12) + 20 = total number of stamps

Let's solve this equation to find the value of x and the total number of stamps.

Calculation

(x + 12) + 20 = total number of stamps

Simplifying the equation:

x + 32 = total number of stamps

Subtracting 32 from both sides of the equation:

x = total number of stamps - 32

Now, we can substitute the value of x back into the equation to find the total number of stamps.

Answer

The total number of stamps they have together is (total number of stamps - 32).

Please provide the value of the total number of stamps, and I will calculate the final answer for you.