Question

2375 x ( 72 : n ) + 49 với n = 8, n = 9 

Answer 1

`2375 xx (72 : 8) + 49`

`= 2375 xx 9 + 49`

`= 21424`

_____________________

`2375 xx (72 : 9) + 49`

`= 2375 xx 8 + 49`

`= 19049`

Answer 2

Thay n=8, ta có:

2375 x ( 72 : 8 ) + 49

= 21424

Thay n=9, ta có:

2375 x ( 72 : 9 ) + 49

=19049

Answer 3

n=8

2375 x (72:8) +49

= 2375 x 9 +49

= 21375 + 49

=21424

n=9

2375 x (72:9) + 49

= 2375 x 8 +49

= 19000+49

=19049