Question

В альбоме было 25 рисунков . в первый день оля раскрасила несколько рисунков , во втарой на три рисунка больше чем в первый . после этого 18. рисунков осталось не раскрашеными . сколько рисунков оля раккрасила в первый день?

Answer 1

Наверное что 25-18-3=4

Answer 2

Solution:

To solve this problem, we can use a system of equations to represent the given information and then solve for the unknown. Let's denote the number of pictures Olga colored on the first day as x and the total number of pictures in the album as 25.

1. Olga colored several pictures on the first day. 2. On the second day, she colored three more pictures than on the first day. 3. After that, 18 pictures remained uncolored.

We can represent this information in the following equations:

1. x - Olga's colored pictures on the first day. 2. x + 3 - Olga's colored pictures on the second day. 3. 25 - (x + x + 3) = 18 - The remaining uncolored pictures.

Let's solve for x:

25 - (x + x + 3) = 18 25 - (2x + 3) = 18 25 - 3 - 18 = 2x 4 = 2x x = 2

Answer:

Olga colored 2 pictures on the first day.