Question

Thực hiện phép tính

( 100/7 + 100/9 + 100/11) : 1/7 + 1/9 + 1/11

Answer 1

( 100/7 + 100/9 + 100/11) : (1/7 + 1/9 + 1/11)

=100( 1/7 + 1/9 + 1/11) : (1/7 + 1/9 + 1/11)

=( 1/7 + 1/9 + 1/11).(100:1)

=239/693.100

=23900/693

Answer 2

( 100 / 7 + 100 / 9 + 100 / 11 ) : (1 / 7 + 1 / 9 + 1 / 11 )

= 100 x (( 1 / 7 + 1 / 9 + 1 / 11 ) : ( 1 / 7 + 1 / 9 + 1 / 11 ))

=100 x 1

=100