Question

Wykonaj podane działania.

a) 4 1/5 - 2 3/4 + 1 1/8 - 2 7/10 =
b) 8 5/36 - 3 7/9 - 2 1/8 - 1 7/18 =
c) 6 1/2 - [ 5 1/3 - ( 4 1/4 - 3 1/5)] =

Answer 1

a)
4 1/5 - 2 3/4 + 1 1/8 - 2 7/10 =
21/5 - 11/4 + 9/8 - 27/10 =
168/40 - 110/40 + 45/40 - 108/40 = -5/40 = -1/8

b)
8 5/36 - 3 7/9 - 2 1/8 - 1 7/18 =
293/36 - 34/9 - 17/8 -  25/18 =
1172/144 - 544/144 - 306/144 - 200/144 = 122/144 = 61/72

c)
6 1/2 - [ 5 1/3 - ( 4 1/4 - 3 1/5)] =
13/2 - [ 16/3 - ( 17/4 - 16/5)] =
13/2 - [ 16/3 - ( 85/20 - 64/20)] =
13/2 - [ 16/3 - 21/20] =
13/2 - [ 320/60 - 63/60] =
13/2 - 260/60 =
13/2 - 130/30 =
195/30 - 130/30 = 65/30 = 13/6 = 2 1/6

Mam nadzieję, że jest dobrze :)

Answer 2

a) 4 1/5 - 2 3/4 + 1 1/8 - 2 7/10 =21/5-11/4+9/8-27/10=105/20-55/20+9/8-54/20=-4/20+9/8=-16/80+90/80=74/80

b) 8 5/36 - 3 7/9 - 2 1/8 - 1 7/18 =293/36-34/9-17/8=293/36-136/36-17/8=315/72-153/72=162/72=81/36=9/4
c) 6 1/2 - [ 5 1/3 - ( 4 1/4 - 3 1/5)] =13/2-[16/3-(17/4-16/5)=13/2-[16/3-(80/20-64/20)]=13/2-[16/3-16/20]=13/2[80/15-12/15]=13/2-68/15=195/30-136/30=59/30