Question

a. (–4 + 15) – (6 – 12) – (–9 + 3) – 15

Answer 1

Explicación paso a paso:

(–4 + 15) – (6 – 12) – (–9 + 3) – 15

=(11) – (-6) – (–6) – 15

=11+6+6-15

=23-15

=8