a,x x 1/2 = 1/3 

b,x : 4/5 = 5/2

2/9 : x = 2/3 

Bài toán này :

X x 1/2 = 1/3

X = 1/3 : 1/2 

X = 2/3

X : 4/5 = 5/2

X  = 5/2 x 4/5

X = 1/2

2/9 : X = 2/3

X = 2 / 9 : 2/ 3

X = 3 

Cho góc bẹt xOy. Vẽ tia Oz sao cho yOz = 80 độ .Tính góc xOz ?

giúp mị !!!!!!!

0,55km = 550m

1. Tom drives to work every morning

Tom travels .......................................

2.He goes to work at seven fifteen

He goes to work at a ...............................,.......

3.The Red river is 1,200 kilometers long . The Nile river is 6,437 kilometers long

The Nile river is much .......................................................

giúp mình nha !!!!!!!!!!!