Question

Efetue as multiplicações: a) 2.9/7 b)11/5 x 4 c)2/3 x 4/5 d)3/11 x 11/33

Answer 1

2/1 x 9/7 = 18/7

11/5 x 4/1 =  44/5

2/3 x 4/5 = 8/15

3/11 x 11/33 = 33/363 simplificando por e   11/121  simplificando por 11 = 1/11