Question

tính bằng cách thuận tiện nhất

5/6 + 4/15 + 11/15 + 7/6

Answer 1

\(=\left(\dfrac{5}{6}+\dfrac{7}{6}\right)+\left(\dfrac{4}{15}+\dfrac{11}{15}\right)=\dfrac{12}{6}+1=2+1=3\)

Answer 2

=(5/6+7/6)+(4/15+11/15)

=12/6+15/15

=2+1

=3

Answer 3

= (5/6 + 7/6) + (11/15 + 4/15)

= 12/6 + 15/15

= 2 + 1

= 3

Answer 4

(5/6+7/6)+(4/15+11/15)=12/6+1=2+1+3

 

Answer 5

= ( 5/6 + 7/6 ) + ( 4/15 + 11/15 )

=       12/6      +        15/15

=        2            +          1

=                       3