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20 - ( x + 3 ) = -45 - (17 - 45)
20 - ( x + 3 ) = -45 - (-28)
20 - ( x + 3 ) = -17
x + 3 = 20 - (-17)
x + 3 = 37
x = 37 - 3
x = 34
a/ She lives in Ha Noi.
b/ There are a lot of tall buildings and wide roads in Ha Noi.
c/ She spends her summer holiday in Tam Dao.
d/ Yes, it is
e/ The weather in Tam Dao is cool all year around like in Da Lat.
f/ She thinks life in Tam Dao is more peaceful than in Ha Noi.
= 10,8 x (12,5 - 2 - 0.5)
= 10,8 x 10
= 108
Số ki-lô-gam thóc thửa ruộng thứ hai thu hoạch được là:
64500 : 2 = 32250 (kg)
Số ki-lô-gam thóc cả 2 thửa thu được là:
64500 + 32250 = 96750 (kg)
Đáp số: 96750 kg thóc
Số HS trong nhóm 1 của lớp 6A1 là: 40 x \(\dfrac{7}{35}\) = 8 (HS)
Số HS trong nhóm 2 của lớp 6A1 là: 8 : 40 x 100 = 20 (HS)
Số HS trong nhóm 3 của lớp 6A1 là: 40 - 8 - 20 = 12 (HS)
Vậy số HS trong nhóm 1 của lớp 6A1 là: 8 HS
số HS trong nhóm 2 của lớp 6A1 là: 20 HS
số HS trong nhóm 3 của lớp 6A1 là: 12 HS