Question

calcule o valor destas expressoes numericas envolvendo fraçoes . Nao se esqueça da ordem em que as operaçoes devem ser efetuadas.

a) 3/4 - 2/3 x 1/2 =
b) Rais quadrada de 3/10 : 8/15 =
c) 1 1/2 : 3/4 x 1/5 =
d) (3/4)2 - (1/2)3 =

Answer 1

a) 3/4-2/3.1/2=
    3/4 - 1/3=
9/12- 4/12= 5/12

b)3/10 : 8/15= 3/10 .15/8 =9/16
 ²V9/16= 3/4

c)1  1/2 : 3/4 .1/5=
   3/2 .4/3.1/5=2/5
d)(3/4)2-(1/2)3=
  3/2- 3/2= 0

Answer 2

Resposta:

a=5/13

b=3/3

c=2/5

d=0