Question

1/4=2/8
2/3=1/4
1/3=2/6
6/45=2/5
Todas são equivalentes?

Answer 1

apenas 1/4=2/8 e 1/3=2/6

Answer 2

1 = 2   ==> 1.8 = 2.4  ==> 8 = 8  V
4    8
==========================================
2 = 1 ==> 2.4 = 3.1 ==> 8 = 3    F
3    4
===========================================
1 = 2 ==> 1.6 = 3.2 ==> 6 = 6   V
3    6
========================================
 6   = 2 ==> 6.5 = 45.2 ==> 30 = 90    F
45     5