Question

oblicz 5/6+4/9= 5/8+7/10= 6 8/9+2 1/10= 2 7/9+3 5/6= 2 9/10+3 7/15= 3/4-2/5 = 5/8-2/5= 3/4-1/6= 1 5/6-3/8= 5 7/9-1 1/2= 8 1/6-2 2/5= 51/4-1 1/6= 8 3/4-2 7/10=

Answer 1

5/6 + 4/9 = 15/18+ 8/18= 23/18= 1 i 5/18

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

2 7/9+3 5/6=2 14/18+ 3 15/18= 5 29/18=6 11/18

 2 9/10+3 7/15= 2 54/60+ 3 28/60= 5 82/60= 6 22/60 = 6 11/30

 3/4-2/5 =15/20- 8/20= 7/20

 5/8-2/5= 25/40-16/40= 19/40

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 15/20-2 14/20= 6 1/20

 

Answer 2

5/6+4/9= 15/18+8/18=23/18=1i 5/18

5/8+7/10=25/40+28/40=53/40=1i13/40

6i8/9+2i1/10=6i80/90+2i9/90=8i89.90

2i7/9+3i5/6=2i`14/18+3i 15/18=5i 29/18=6 i 11/18

2i9/10+3i7/15=2i 27/30+3i 14/30=5 i 41/30=6i 11/30

3/4-2/5=15/20-8/20=7/20

5/8-2/5=25/40-16/40=9/40

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

1i5/6-3/8=1i 20/24-9/24=1i 11/24

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

8i1/6-2i 2/5=8i 5/30- 2 i 12/30=7i 35/30-2i 12/30

5i 23/30

51/4-1i 1/6 niewiem

8i 3/4-2i 7/10=8i 15/20-2i 14/20=6 i 1/20