Question

Oblicz (np. 5 1/2 to pięć i jedna druga):

a) 6 2/3 + 4 1/4 - 5 3/5 =

b) 4 1/4 - (1 1/2 +2/3 + 1 5/6) =

c) (4 1/8 + 10 2/5) - (6 7/10 + 2 1/2) =

d) 21 - 9 3/7 - 7 2/3 - 1 5/6 =

Proszę o szybką odpowiedź :)

Answer 1

a) =5 13/45

b) =1/2

c) =2 22/40

d) =1 31/42 

Answer 2

a)6 2/3+ 4 1/4-5 3/5= 6 8/12=4 3/12 - 5 3/5= 10 11/12 - 5 3/5 = 10 55/60- 5 36/60=

=5 19/60

b)4 1/4 -(1 1/2+2/3+1 5/6)=4 1/4-(1 3/6=4/6=1 5/6=4 1/4-(1 7/6+1 5/6)=4 1/4-(2 1/6

+1 5/6)=4 1/4- 4= 1/4

c)(4 1/8+10 2/5)-(6 7/10+2 1/2)=(4 5/40+10 10/40)-(6 14/20+2 10/20)=4 11/40-9 4/20

=4 11/40-9 8/40=5 3/40

d)21-9 3/7- 2/3-1 5/6=12 4/7-2/3-1 5/6=12 12/21-14/21-1 5/6=11 33/21-14/21-1 5/6=

=11 19/21-1 5/6=11 112/126-1 105/126=10 7/126