1-Calcule o valor de cada expressão.
21 : 3 – 4 · (–3)
36 : (–4 + 5) · (–2)
(–29 + 5) : (–6) · 2
|–10| · 3 + 5 · (–3 + 4)
|(–4) · 3| + |25 : (–5)|
(–5) + (–3) · (–4) – (–10) · (–2)
20 + 3 · (–2) – 5 · (–8) – 10
(–3) · (–4) – (–24) : (+6)
2 – (–7 + 2 · 5) : (–1)
16 – 30 · [6 – 2 · (3 – 1) + 3]
[(+23) + (–5)] : [12 – (+3) · (–2)]

alguem pode me ajudar?
por favor?
urgenteee!