Question

calcule A 3/4 - 1/2 B 3/8 + 3/2
C 3/5 + 3/4 + 3/10 D 8/5 - 1/4 - 3/10 me ajudem

Answer 1

A = 0,25

B = 1,87500

C = 1,65

D = 1,05

Answer 2

Olá

a) 3/4 - 1/2⇒o mmc de (4,2) = 4

3 - 2/4

1/4

b) 3/8 + 3/2 ⇒ o mmc de (8,2)= 8

3 + 12/8

15/8

c) 3/5 + 3/4 + 3/10 ⇒ o mmc de (5,4,10)=20

12 + 15 + 6/20

33/20

d) 8/5 - 1/4 - 3/10 ⇒ o mmc de ( 5,4,10)= 20

32 - 5 - 6 / 20

21/20

Bons estudos.