Minh Quan Nguyen
Giới thiệu về bản thân
Hanoi, one of the most ancient capitals in the world, is in north Vietnam. It has got a population of about 4,900,000 in 2021. Hanoi is a unique combination of both contemporary and classical architecture. There are a lot of colonial buildings, ancient pagodas, unique museums, skyscrapers and malls within the city center. Ha Long Bay, Ninh Binh and Sapa are must-see places not far from Hanoi. When I have on holiday, I usually go there with my family. However, I love to visit Hanoi most
ĐÁP ÁN LÀ : CÒN CÁI NỊT
a) (x + 73) - 315 = 217
x + 73 = 217 +315
x + 73 = 532
x = 532 - 73
x = 459
Vậy x = 459
b) 2727 : (12.x - 91) = 27
12.x - 91 = 2727 : 27
12.x - 91 = 101
12.x = 101 + 91
12.x = 192
x = 192 : 12
x = 16
Vậy x = 16
c) x + x.4,5 : 3 + x.7 : 2 = 235
x + x.1,5 + x.3,5 = 235
3x.(1,5 + 3,5) = 235
3x.5 = 235
3x = 235 : 5
3x = 47
x = 47 : 3
x = 15,(6)
Vậy x = 15,(6)