Question

15 * 89 +65 -54=?

Answer 1

=15*89+(65-64)=1335+1=1336

Answer 2

15 * 89 +65 -54

=1335+65 -54

=1335+(65-64)

=1335+1

=1336

Answer 3

15 * 89 +65 -54

=1335+65 -54

=1335+(65-64)

=1335+1

=1336