Question

10 - [12 - (-9 - 1)]

Answer 1

=10-12+(-9-1)=-12

Answer 2

10 - [12 - (-9 - 1)]

=10-10-(-12)

=0-12

=-12

Answer 3

10 - [12 - (-9 - 1)]

=10-10-(-12)

=0-12

=-12

Answer 4

\(\text{10 - [12 - (-9 - 1)]}\) = \(10-\left[12-\left(-10\right)\right]\)

                            = \(10-\left(12+10\right)\)

                            = \(10-22\)

                            = \(-12\)

\(#Hoctotnha\)