Question

за одну тетрадь и три ручки Ион заплатил 19 леев,а за такие же три тетради и две ручки мария заплатила 22 лея.Найти стоимость тетради и стоимость ручки.

Answer 1

1т+3р=19
3т+2р=22

т=19-3р

3*(19-3р)+2р=22   57-9р+2р=22   57-22=7р  7р=35  р=5

т=19-3*5
т=4

Ответ: ручка 5 леев тетрадь 4 леея

Answer 2

Ручка=5
тетрадь=7
вот так вот

Answer 3

Problem Analysis

We are given the information that Ion paid 19 lei for one notebook and three pens, while Maria paid 22 lei for three notebooks and two pens. We need to find the cost of one notebook and the cost of one pen.

Solution

Let's assume the cost of one notebook is x lei and the cost of one pen is y lei.

From the given information, we can form the following equations:

Equation 1: Ion paid 19 lei for one notebook and three pens: x + 3y = 19 (1)

Equation 2: Maria paid 22 lei for three notebooks and two pens: 3x + 2y = 22 (2)

We can solve this system of equations to find the values of x and y.

Solving the System of Equations

To solve the system of equations, we can use the method of substitution or elimination. Let's use the method of substitution.

From Equation 1, we can express x in terms of y:

x = 19 - 3y (3)

Substituting Equation 3 into Equation 2:

3(19 - 3y) + 2y = 22

Simplifying the equation:

57 - 9y + 2y = 22

Combining like terms:

-7y = -35

Dividing both sides by -7:

y = 5

Now, substitute the value of y back into Equation 3 to find the value of x:

x = 19 - 3(5) = 19 - 15 = 4

Answer

The cost of one notebook is 4 lei and the cost of one pen is 5 lei.

Please note that the search results provided by You.com did not directly provide the answer to this specific problem. However, the solution was obtained by solving the system of equations formed from the given information.