Question

15. Comparați fracțiile, aducîndu-le la acelaşi numârâtor: a) 7 3 si 5 2 ;b) 8 5 si 10 6 ;c) 6 5 si 9 8 ;d) 10 13 gi 12 15 ;e) 8 13 gi 12 17 9 15 17 si 20 23 ;g) 10 13 si 20 27 ;h) 20 19 gi 30 29 помогите моему сыну,я румынский не понимаю​

Answer 1

Răspuns:

Explicație pas cu pas:

a) ²⁾7/3 si ³⁾5/2  <=>14/6 < 15/6  => 5/2 > 7/3

b) ⁶⁾8/5 si ⁵⁾10/6 <=> 48/30 si 50/30  <=> 24/15 si 25/15 =>

25/15 > 24/15 => 10/6 > 8/5

c) ⁸⁾6/5 si ⁵⁾9/8 <=> 48/40 si 45/40  => 48/40> 45/40 =>

6/5 > 9/8

d) 10/13 si 12/15 <=> ⁵⁾10/13 si ¹³⁾4/5  <=> 50/65 si 52/65 =>

52/65 > 50/65 => 12/15 > 10/13

e) ¹⁷⁾8/13 si ¹³⁾12/17 <=> 136/221 si 156/221 => 156/221 > 136/221 =>

12/17 > 8/13

f) ²³⁾15/17 si ¹⁷⁾20/23 <=> 345/391 si 340/391 => 345/391 > 340/391 =>

15/17 > 20/23

g) ²⁷⁾10/13 si ¹³⁾20/27 <=> 270/351 si 260/351 => 270/351 > 260/351 =>

10/13 > 20/27

h) ²⁹⁾20/19 si ¹⁹⁾30/29 <=> 580/551 si 570/551 => 580/551 > 570/551 =>

20/19 > 30/29