Question

Proszę o zrobienie ;)
zad. 1
1/4+1/5+3/10 =
5+7 8/9 + 4 1/2 =
Zad. 2
20 - 3/7 =
14 i 2/5 - 3/5
32 - 4 i 5/6
85 i 10/11 - 26 i 4/11
27 i 3/8 - 19 i 5/8 =
Zad.
6/7 - 3/4 =
12/13 - 2/5 =
14 i 2/5 - 3/5 =
1 i 2/3 - 1/6 =
2 i 1/2 - 1 i 3/4 =
12 i 7/10 - 8 i 7/8 =
4 i 7/9 - 2 i 11/12

Answer 1

1/4+1/5+3/10 =5/20 + 4/20 +6/20=15/20= 3/4
5+7 8/9 + 4 1/2 = 5 + 7 16/18 + 4 9/18= 16 25/18= 17 7/18
20 - 3/7 = 19 4/7
14 i 2/5 - 3/5= 72/5 - 3/5=69/5= 13 3/5
32 - 4 i 5/6= 27 1/6
85 i 10/11 - 26 i 4/11= 59 6/11
27 i 3/8 - 19 i 5/8 =219/8- 157/8=62/8=7 6/8
6/7 - 3/4 = 24/28 - 21/28= 3/28
12/13 - 2/5 =60/65 - 26/65= 34/65
14 i 2/5 - 3/5 =72/5 - 3/5 = 69/5= 13 4/5
1 i 2/3 - 1/6= 1 4/6 - 1/6= 1 1/2
2 i 1/2 - 1 i 3/4 = 2 i 2/4 - 1 i 3/4= 3/4
12 i 7/10 - 8 i 7/8 =12 i 28/40 - 8 i 35/40= 508/40 - 355/40=153/40=4 33/40
4 i 7/9 - 2 i 11/12= 4 i 28/36 - 2 i 33/36= 172/36 - 105/36= 67/ 36= 1 31/36

Mam nadzieje ze pomoglam ;]

Answer 2

Zad.1
1/4+1/5+3/10 =15/20=3/4 po skróceniu
5+7 8/9 + 4 1/2 =11 i 7/9 + 4 1/2 = 15 23/18 = 16 5/8
Zad. 2
20 - 3/7 =19 9/9 - 3/7=19 63/63 - 27/63=19 36/63
14 i 2/5 - 3/5=14 2/5 - 3/5 =13 7/5 -3/5=13 4/5
32 - 4 i 5/6=31 9/9 - 4 5/6 = 31 18/18 - 4 15/18=27 3/8 = 27 1/6
85 i 10/11 - 26 i 4/11=59 6/11
27 i 3/8 - 19 i 5/8 = 26 11/8 - 19 5/8 = 7 6/8 =7 3/4
Zad.3
6/7 - 3/4 =24/28 - 21/28 = 3/28
12/13 - 2/5 =60/65 - 36/65=24/65
14 i 2/5 - 3/5 =13 7/5 - 3/5=13 4/5
1 i 2/3 - 1/6 = 1 4/6 - 1/6 = 1 3/6 =1 1/2
2 i 1/2 - 1 i 3/4 = 1 6/4 - 1 3/4 =3/4
12 i 7/10 - 8 i 7/8 =12 28/40 - 8 35/40=11 68/40 - 8 35/40=3 33/40
4 i 7/9 - 2 i 11/12=4 28/36 - 2 33/36 = 3 64/36 - 2 33/36=1 31/36