Jika a= 1 1/2, b. 1 2/3, dan c= 1 1/4, hitunglah! a.a+b+c b.axbxc c.(axb):c Jawab: Tolong dijawab

A) a + b + c
  = 1 1/2 + 1 2/3 + 1 1/4
  = 1 6/12 + 1 8/12 + 1 3/12
  = 3 17/12
  = 4 5/12

B) a x b x c 
  = 1 1/2 x 1 2/3 x 1 1/4
  = 3/2 x 5/3 x 5/4
  = 5/2 x 5/4
  = 25/8
  = 3 1/8

C) (a x b) : c
  = (1 1/2 x 1 2/3) : 1 1/4
  = (3/2 x 5/3) : 5/4
  = 5/2 x 4/5
  = 4/2
  = 2

a. 3/2 + 5/3 + 5/4 = (18+20+15)/12 = 53/12 = 4 5/12

b. 3/2 x 5/3 x 5/4 = 75/24 = 3 3/24 = 3 1/8

c. (3/2 x 5/3) : 5/4 = 15/6 : 5/4 = 15/6 x 4/5 = 60/30 = 2