Question

c)– {20 – [(-7 + 9) – 10] + [-30 – (1 – 71)]}



d) {[73 – 49 – 45 + 20] – (40 – 30 -1)} + (-3)



me ajudeem!!! preciso terminar isso hoje :'0​

Answer 1

c)– {20 – [(-7 + 9) – 10] + [-30 – (1 – 71)]}

– {20 – [2 – 10] + [-30 – (- 70)]}

– {20 – [- 8] + [-30 + 70)]}

– {20 + 8 + 40}

- 68

d) {[73 – 49 – 45 + 20] – (40 – 30 -1)} + (-3)

{- 1 – 9} - 3)

- 10 - 3

-13