Tính 5/9+7/12-3/4

Một phân số có mẫu lớn hơn tử là 55 . Tìm phân số đó biết mẫu bằng \(3\dfrac{3}{4}\)

15/12/2018 |   1 Trả lời

Tìm x,y biết

a) (x-3) (2y+1)=7

b) (2x+1) (3y-2)

giúp mk 4h,mk phải đi học rồi

Nhớ ghi cách làm ra nha!!

7x- 2x=6^17:6^15+44:11

15/12/2018 |   4 Trả lời

Cho hai tập hợp A=(2;4;6;8;10) ; B=(a,b,c)

a) hãy tìm các tập hợp con của B

b) hãy viết tập hợp A dưới dạng chỉ ra tính chất đặc trưng của phần tử

tinh nhanh 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ƯCLN của ba số 96, 160, 192 bằng :

(A) 16                      (B) 24                       (C) 32                     (D) 48

Hãy chọn phương án đúng ?

Một cửa hàng mua vào 1 kg đường với giá 6000 đồng. Hỏi cửa hàng phải bán lại bao nhiêu tiền 1 kg đường để được lời 20 % theo giá bán?

so sánh 31^111va 17^139

3+2^x-1=24-[4^2-(2^2-1)]

Giúp mình với ai nhanh thì được tick

Tìm 3 số nguyên a,b,c biết : a+b-c=-3,a-b+c=11,a-b-c=-1

Giúp mình nhanh nhất có thể