on

1. How often do you homework?

-Everyday

2. Where are you going to stay?

-In a hotel

\(\frac{x}{-15}=\frac{-60}{x}\)

=> x² = (-15) . (-60) = 900 = + 30

Vậy x = 30 hoặc x = -30

1. How much is cake?- Two thousand dong

1.How much does your pen cost?

2.I would like two kilos of potatoes

3.Nga goes to school on foot everyday

4.My father isn't tall

Ta có:

3.(1/5.8+1/8.11+1/11.14+...+1/x.(x+3))=3.101/1540

3/5.8+3/8.11+3/11.14+...+303/1540

1/5-1/8+1/8-1/11+1/11-1/14+...+1/x+1/x+3=303/1540

1/5-1/x+3=303/1540

1/x+3=1/5-303/1540

1/x+3=5/1540=1/308

x+3=308

x=308-3

x=305

I was a happy child, living in a great place, going to a great school. My primary school was in a village, just half a kilometers away from my home. There also was a kindergarten in the same building. There were 12 girls and 18 boys in my class. We all were greatest friends, sometimes we used to sit in our lovely classroom and say "we are best class in this school".

How is the weather in spring?

1. My and her younger sister like skipping in winter

2. Which language do you often speak English or French?

A