Question

+6+(-4)- (-7) +(+12-6)-(+2-1)=

Answer 1

6−4−(−7)+12−6−(2−1)

=2−(−7)+12−6−(2−1)

=9+12−6−(2−1)

=9+6−(2−1)

=15−(2−1)

=15−1

=14