Question

Tính giá trị biểu thức

(10-1 1/6 x 6/7) : (21 : 11/2 + 5 2/11)

Answer 1

(10 - 1 \(\dfrac{1}{6}\) x \(\dfrac{6}{7}\)) : ( 21: \(\dfrac{11}{2}\) + 5\(\dfrac{2}{11}\) ) 

( 10 \(\dfrac{7}{6}\) x \(\dfrac{6}{7}\) ) : ( 21 : \(\dfrac{11}{2}\) + \(\dfrac{57}{11}\) )

(10 - 1) : ( \(\dfrac{42}{11}\) + \(\dfrac{57}{11}\) )

= 9 : 9

= 1

=> đáp án : 1

Answer 2

=(10 - 1 1/6 x 6/7) : ( 21: 11/2 + 5 2/11) 

=( 10 7/6 x 6/7 ) : ( 21 : 11/2 + 57/11)

=(10 - 1) : ( 42/11 + 57/11 )

= 9 : 9

=1