Question

Resolva:
A) (+3) + (– 2) + (– 5) = -4
B) (– 2) – (+1) – (+5) = -6
C) (+4) + (– 2) – (+3) = -1
D) (+5) – (– 3) – (– 1) = 9
E) (+4) + (– 6) – (+7) – (– 6) + (+7) = 16
F) (– 3) – (– 5) + (– 6) + (+8) – (– 4) = 8
G) + (– 3 + 8) – (– 3 + 8) + (5– 6) =
H) −(−3 − 1) − (−6 + 4 − 1) − 6 − (−3 + 2) =
I) 18 − (−5 − 2 − 3) + 20 − (−6 + 8) − (−1 − 8 + 3) =
* Com cálculos pfv

Answer 1

$a) \: 3 - 2 - 5 = - 4 \\ 3 - 2 - 5 + 4 = 0 \\ 0 \\ b) \: - 2 - 1 - 5 = - 6 \\ - 2 - 1 - 5 + 6 = 0 \\ - 2 \\ c) \: 4 - 2 - 3 = - 1 \\ 4 - 2 - 3 + 1 = 0 \\ 0 \\ d) \: 5 + 3 + 1 = 9 \\ 5 + 3 + 1 - 9 = 0 \\ 0$

$e) \: 4 - 6 - 7 + 6 + 7 = 16 \\ 4 - 6 - 7 + 6 + 7 - 16 = 0 \\ - 20 \\ f) \: - 3 + 5 - 6 + 8 + 4 = 8 \\ - 3 + 5 - 6 + 8 + 4 - 8 = 0 \\ 0$

$g) \: - 5 + 5 - 1 = - 1 \\ h) \: - 4 + 1 - 6 - 1 = - 10 \\ i) \: 18 - 10 + 20 - 2 - 6 = 20$