Question

thực hiện phép tính 

\(\dfrac{6}{5}\)+(3+\(\dfrac{-1}{5}\))

Answer 1

\(\dfrac{6}{5}+\left(3+\dfrac{-1}{5}\right)\\ =\dfrac{6}{5}+\dfrac{14}{5}\\ =4\)

Answer 2

\(\dfrac{6}{5}+\left(3+\dfrac{-1}{5}\right)=\dfrac{6}{5}+3+\dfrac{-1}{5}=\dfrac{6}{5}+\dfrac{15}{5}+\dfrac{-1}{5}=\dfrac{20}{5}=4\)

Answer 3

=\(\dfrac{6}{5}+\left(\dfrac{15}{5}+\dfrac{-1}{5}\right)\)

=\(\dfrac{6}{5}+\dfrac{14}{5}\)

=\(\dfrac{20}{5}=4\)

Answer 4

(3+

Answer 5

65+(3+−15)=65+145=4

Answer 6

\(\dfrac{6}{5}+\left(3-\dfrac{1}{5}\right)=1+3=4\)