Question

Oblicz : 2/9+8/9, 6/11+5/11 7/15+9/15 3 i 5/7+1 i 3/7 1 i 5/9+2 i 4/9 8 i 3/4+9 i 3/4 84 i 1/5+5 i 4/5 2 i 17/20+6 i 4/20 15 i 8/9+9 i 6/9 Błagam to na jutro (z góry dziękuje)

Answer 1

2/9 + 8/9 = 1 i 1/9

6/11 + 5/11 = 1

7/15 +9/15 = 1 i 1/15

3 i 5/7 + 1 i 3/7 = 5 i 1/7

1 i 5/9 + 2 i 4/9 = 4

8 i 3/4 + 9 i 3/4 = 18 i 2/4

84 i 1/5 + 5 i 4/5 = 90

2 i 17/20 + 6 i 4/20 = 9 i 1/20

15 i 8/9 + 9 i 6/9 = 22 i 5/9

Answer 2

2/9+8/9=1 1/9

6/11+5/11=1

7/15 +9/15=16/15=1 1/15

3 5/7+1 3/7=4 8/7=5 1/7

1 5/9+2 4/9=3 9/9=4

8 3/4+9 3/4=17 6/4=18 1/2

84 1/5+5 4/5=89 5/5=90

2 17/20+6 4/20=8 21/20=9 1/20

15 8/9+9 6/9=24 14/9=25 5/9