5. Oblicz:
1
a)
+
4
+
9
12 12
= 13 = 1 1 / 2
12
c
)
10
-
1
7 4
8
-
II
+
=
5
b)
d) 68-13-
3
11/3+2 10 -
36 =
+

Question

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Odpowiedź :

Misiek12171go Misiek12171go · Answer 1

Odpowiedź:

2/3+6/7=14/21 + 18/21 = 32/21 = 1 11/21

7/8+6/7=49/56 + 48/56 = 97/56 = 1 41/56

7/8+5/6= 21/24 + 20/24 = 41/24 = 1 17/24

5 1/4+5/6= 5 3/12 + 10/12 = 5 13/12 = 6 1/12

1 7/9+ 2 3/10= 1 70/90 + 2 27/90 = 3 97/90 = 4 7/90

2 7/8+ 3 1/6= = 2 21/24 + 3 4/24 = 5 25/24 = 6 1/24

8/9-2/5= 40/45 - 18/45 = 22/45

7/8-2/5= 35/40 - 16/40 = 19/40

4 5/6-1/4=4 10/12 - 3/12 = 4 7/12

6 8/9- 1 1/2= 6 16/18 - 1 9/18 = 5 7/18

8 5/7- 3 2/5= 8 25/35 - 3 14/35 = 5 11/35

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

KoalciaUwUgo KoalciaUwUgo · Answer 2

Szczegółowe wyjaśnienie:

2/3+6/7=14/21+18/21=32/21=1 i 11/21

7/8+5/6=21/24+20/24=41/24=1 i 17/24

5 i 1/4+5/6=21/4+5/6=63/12+10/12=73/12=6 i 1/12

1 i 7/9+2 i 3/10=1 i 70/90+2 i 27/90=4 i 7/90

2 i 7/8+3 i 1/6=2 i 21/24+3 i 4/24=6 i 1/24

8/9-2/5=40/45-18/45=22/45

7/8-4/5=35/40-32/40=3/40

4 i 5/6-1/4=4 i 10/12-3/12=4 i 7/12

6 i 8/9-1 i 1/2=6 i 16/18-1 i 9/18= 5 i 7/18

8 i 5/7-3 i 2/5=8 i 25/35-3 i 14/35=5 i 11/35

4 i 1/4-4 i 1/6= 4 i 6/24-4 i 4/24=2/24=1/12