Question

Calcule

A) 3/5 + 2/4 = ?

B) 6/3 - 1/5 = ?

C) 3/7 X 8/9 = ?

D) 4/6 : 3/8 = ?

Answer 1

Explicação passo-a-passo:

A) 3/5 + 2/4 = (5.2+3.4)/(5.4)=(10+12)/20

3/5+2/4=22/20= (22÷2)/(20÷2)= 11/10

B) 6/3 - 1/5 = (5.6-1.3)/(3.5)=(30-3)/15=27/15

6/3-1/5=(27÷3)/(15÷3)=9/5

C) 3/7 X 8/9 = (3.8)/(7.9)=24/63=(24÷3)/(63÷3)

3/7×8/9= 8/21

D) 4/6 : 3/8 = (4.8)/(3.6)=48/18=(48÷2)/(18÷2)=24/9