Question

tình nhanh: M= 8/27 + 4/15 + 19/27 + 11/15. M=?

Answer 1

`M=(8/27+19/27)+(4/15+11/15)`

`M=27/27+15/15`

`M=1+1=2`

Answer 2

M=8/27+19/27+4/15+11/15=1+1=2

Answer 3

=(8/27 + 19/27 )+ (4/15 + 11/15)

=27/27 + 15/15 

=1+1=2

Answer 4

\(M=\dfrac{8}{27}+\dfrac{4}{15}+\dfrac{19}{27}+\dfrac{11}{15}\)

` M = ( 8/27 + 19/27) + ( 4/15 +11/15)`

`M = 27/27 + 15/15`

`M = 1 + 1`

`M = 2`