Question

Tính: -18/24 + -15/21

Answer 1

\(\dfrac{-41}{28}\)

Answer 2

-41/28

Answer 3

\(\dfrac{-18}{24}+\dfrac{-15}{21}=\dfrac{-3}{4}+\dfrac{-5}{7}=\dfrac{-21-20}{28}=\dfrac{-41}{28}\)

Answer 4

\(\dfrac{-18}{24}+\dfrac{-15}{21}=\dfrac{-126}{168}+\dfrac{-120}{168}=\dfrac{\left(-126\right)+\left(-120\right)}{168}=\dfrac{-246}{168}\)

Answer 5

= -41/28