Question

Hi Aduceţi la cel mai mic numitor comun fractiile: a) 12 și 16; b) g. 27 si 10
a) După simplificări, fracțiile sunt á și b) După simplificări, fracțiile sunt 4. 9. 10.
Rezolvare:
3
8.
Numitorul comun este 24, 24: 6 = 4,24: 8 = 3.
4
9
6
6 =24
şi
8 - 24
1 2 1
Numitorul comun este 180.
180 : 4 = 45, 180 : 9 = 20, 180 : 10 = 18.
45) 1 45 20)2 40 18) 1 18
4 180 9 - 180 10 - 180
41
3) 3​

Answer 1

Răspuns:

/ supra

|× inmultit cu...

a) 8/9 |×7, 9/7 |×9;

56/63, 81/63

b) 3/4 |×21, 5/7 |×12, 8/3 |×28

63/84, 60/84, 224/84

c) 3/11 |×4, 9/4 |×11

12/44, 99/44

d) 4/5 |×42, 6/7 |×30, 5/6 |×35

168/210, 180/210, 175/210

e) 5/12 |×4, 11/8 |×6, 17/48 |×1

20/48, 66/48, 17/48

f) 2/35 |×4, 1/70 |×2, 3/140 |×1

8/140, 2/140, 3/140

g) 9/13 |×8, 15/104 |×1, 23/52 |×2

72/104, 15/104, 46/104

h) 5/62 |×5, 13/31 |×10, 9/155 |×2

25/310, 130/310, 18/310

i) 7/15 |×15, 41/225 |×1, 19/75 |×3

105/225, 41/225, 57/225

j) 3/32 |×15, 7/24 |×20, 11/40 |×12, 7/48 |×10

45/480, 140/480, 132/480, 70/480

k) 5/12 |×9, 1/54 |×2, 7/36 |×3

45/108, 2/108, 21/108

l) 2/15 |×24, 1/72 |×5, 5/24 |×15

48/360, 5/360, 75/360

m) 3/25 |×18, 7/18 |×25, 1/75 |×6

54/450, 175/450, 6/450

n) 7/60 |×6, 1/72 |×5, 5/24 |×15

42/360, 5/360, 75/360

o) 1/441 |×8, 1/168 |×21, 5/98 |×36

8/3528, 21/3528, 180/3528

Explicație pas cu pas: