Question

На верхней полке учебников на 12 меньше чем на нижней, коля заметил что на верхней полке учебников в 4 раза меньше. сколько учебников на каждой полке

Answer 1

 х+х+12=4х+х 
2х-4х-х=-12 
-3х=-12 
х=4 
4 учебника стояло на верхней полке 
4+12=16 на нижней полке

Answer 2

12-4=8
8:2=4
4*4=16 на верхней
16-12=4 на нижней

Answer 3

Solution:

Let's solve this step by step.

1. Let's denote the number of textbooks on the top shelf as x and the number of textbooks on the bottom shelf as y.

2. We are given two pieces of information: - The number of textbooks on the top shelf is 12 less than the number of textbooks on the bottom shelf: x = y - 12. - The number of textbooks on the top shelf is 4 times less than the number of textbooks on the bottom shelf: x = y / 4.

3. We can use these two equations to solve for the values of x and y.

From the first equation, we have: x = y - 12.

From the second equation, we have: x = y / 4.

Equating the two expressions for x, we get: y - 12 = y / 4.

Solving for y: y - y / 4 = 12 (4y - y) / 4 = 12 3y / 4 = 12 3y = 12 * 4 3y = 48 y = 48 / 3 y = 16.

Now that we have the value of y, we can find the value of x using the equation x = y - 12: x = 16 - 12 x = 4.

Answer:

So, there are 4 textbooks on the top shelf and 16 textbooks on the bottom shelf.