Question

(9 – 12) · (75 : 5) : (–15)

(–2) – (–3) · (–5) · (–6)

Answer 1

a)

$- 3 \times 15 \div ( - 15)$

$- 3 \times ( - 1)$

= 3

b)

$- 2 + 3 \times ( - 5) \times ( - 6)$

$- 2 + 90$

= 88