Question

meeee ajudemmm porr favorr

Answer 1

1/2 : 2/1 =  1/2 * 1/2 = 1/4 
2/1 : 1/2 = 2/1 * 2/1 = 4 
4/1 : 1/3 = 4/1 * 3/1 = 12
1/3 : 4/1 = 1/3 * 1/4 = 1/12