Question

02. Efetue as operações indicadas, simplificando as respostas quando necessário:
a) 5/4 + 3/4=
b) 3/40 - 4/20 =
c) 34/20 + 20/30 =​

Answer 1

Explicação passo-a-passo:

8/4=2

3/40=6/80

4/20=8/40=12/60=16/80

6/80-16/80

-10/80

-10:2/80:2=-5/40=-5:5/40:5=-1/8

34/20=68/40=102/60

20/30=40/60

102/60+40/60=142/60

142:2/60:2=71/30.