Question

tính bằng cách thuận tiện
1919/2323x464646/747474x37/19

Answer 1

1919/2323x464646/747474x37/19

= 19/23 x 23/37 x 37/19

= (19/23 x 37/19) x 23/37

= 37/23 x 23/37

= 1

Answer 2

=19/23 x 23/37 x 37/19

=19/23 x 37/19/ x 23/37

=37/23 x 23/37

=1

Answer 3

1

Answer 4

1919/2323x464646/747474x37/19

=  19/23 x 23/37 x 37/19

=  (19/23 x 37/19) x 23/37

=  37/23 x 23/37

= 851/851

= 1

Answer 5

1919/2323x464646/747474x37/19

= 19/23 x 23/37 x 37/19

= (19/23 x 37/19) x 23/37

= 37/23 x 23/37

= 1