tick cho mink nhé

\(\dfrac{50.15.7.8}{25.45.49.4}=\dfrac{2.25.15.7.2.4}{25.3.15.7.7.4}=\dfrac{2.2}{3.7}=\dfrac{4}{21}\)

Sometimes, I go to the park with my parents.

\(\overline{aa}\)+\(\overline{bb}\)+\(\overline{cc}\)=\(\overline{abc}\)

=>11a + 11b + 11c = abc

=>11a + 11b + 11c= 100a + 10b + c

=>11a + 11b + 10c = 100a + 10b

=>11a + b + 10c = 100a

=>b + 10c = 89a

=>c=8 . Vậy b = 9. Số phải tìm là 198.

1. She always brushes her teeth after getting up.

2. She is usually late for school.

3. Does she like shopping with her friends?

4. Does your mother often go to bed early?

5. Do you go home early in the evening?

a) cắt, thái, chặt

b) to, lớn, khổng lồ

c) chăm, chăm chỉ, siêng năng

1+1+1+1=4

4+1=5

Hoa and Nam often go to school on foot every day.

We visit our hometown once a year.

I often work on my English projects in the evening.

Giang and Hoa don't have English on Mondays.

How often does Nam play computer games?

(x – 5)2016 = (x – 5)2018

=> (x – 5)2018 – (x – 5)2016 = 0

=> (x – 5)2016.[(x – 5)2 – 1] = 0

=>   x – 5 = 0 hoặc x – 5 = 1 hoặc x – 5 = -1

=>  x =  5 hoặc x = 6 hoặc x = 4 (Thỏa mãn x ∈ N).

Vậy x ∈ {4; 5; 6}.

tick cho mink nhé (●'◡'●)