Question

Аня Лиза и Артём собирают цветные наклейки у Ани на 20 наклеек больше чем у Лизы и на 20 меньше чем у Артёма а вместе у них 90 наклеек сколько наклеек у Ани и запишите решение и ответ

Answer 1

Х- наклеек у Ани
у- у Лизы
z- у Артема

тогда y=x-20 z=x+20

90=x+(x-20)+(x+20)

3x=90
x=30
y=10
z=50

Answer 2

Let's solve this problem step by step.

Let's assume that the number of stickers Lisa has is L.

According to the given information, Ania has 20 stickers more than Lisa, so Ania has L + 20 stickers.

Artyom has 20 stickers more than Ania, so Artyom has L + 20 + 20 = L + 40 stickers.

Together, they have a total of 90 stickers, so we can write the equation:

L + (L + 20) + (L + 40) = 90

Now, let's solve this equation:

3L + 60 = 90

Subtracting 60 from both sides:

3L = 30

Dividing both sides by 3:

L = 10

So, Lisa has 10 stickers.

Ania has 10 + 20 = 30 stickers.

Artyom has 10 + 40 = 50 stickers.

Therefore, Ania has 30 stickers, and the solution is:

Ania: 30 stickers