Question

oblicz: 5/8+7/10 ,6cale8/9+2cale1/10 ,2cale7/9+3cale5/6 ,2cale9/10+3cale7/15,5/8-2/5 ,3/4-1/6 ,1cala5/6-38 ,5cale7/9-1cala1/2 ,8cale1/6-2cale2/5 ,5cale1/4-1cala1/6,8cale3/4-2cale7/10 ,1/2+1/3+1/4 , 1cala2/5+3cale4/10+2cale1/2

Answer 1

5/8+7/10=50/80+56/80=106/80=1 26/80

6 8/9+2 1/10=6 80/90+2 9/90=8 89/90

2 7/9+3 5/6=2 28/36+3 30/36=5 58/36=6 22/36

2 9/10+3 7/15=2 27/30+3 14/30=5 41/30=6 11/30

5/8-2/5=25/40+16/40=41/40=1 1/40

3/4-1/6=9/12-2/12=7/12

1 5/6-3/8=1 20/24-9/24=1 11/24

5 7/9-1 1/2=5 14/18-1 9/18=4 5/18

8 1/6-2 2/5=8 5/30-2 12/30=7 35/30-2 12/30=5 23/30

5 1/4-1 1/6=5 3/12-1 2/12=4 1/12

8 3/4-2 7/10=8 30/40-2 28/40=6 2/40

1/2+1/3+1/4=6/12+4/12+3/12=13/12=1 1/12

1 2/5+3 4/10+2 1/2=1 4/10+3 4/10+2 5/10=6 13/10=7 3/10