Question

Tính:387+(-224)+(-87)

Answer 1

\(387+\left(-224\right)+\left(-87\right)\)
\(=\left(387+-87\right)+\left(-224\right)\)
\(=300-224=76\)

Answer 2

`387 +(-224)+(-87)`

`387+[(-224) +(-87)]`

`387+ (-311)`

`76`

Answer 3

\(387+\left(-224\right)+\left(-87\right)\)

\(=387-224-87\)

\(=76\)

Answer 4