– 3 – [ - (- 4 + 5)] =
b) (10 – 2) – 3 + (8 + 7 – 5) =
c) – [ 10 + (- 8) ] =
d) 15 + [ - 4 – (- 2 + 7)] =
e) – 10 + 7 + [ - (- 9)] =
f) – [ - 2 – (- 1 – 3)] =
g) – [ - 3 – 8 – (5 + 4)] =
h) 4 – 7 – [ - 10 + (5 – 2) + 4] =
i) – 10 + [ 2 – 1 + (- 20 + 4)] =
j) 20 – 4 – [ 4 – (- 6 + 10)] =
Respostas
Resposta:
Explicação passo a passo:
a)– 3 – [ - (- 4 + 5)] =
- 3 - [ - 1] =
- 3 + 1 = - 2
b) (10 – 2) – 3 + (8 + 7 – 5) =
8 - 3 + ( 15 - 5 ) =
8 - 3 + 10 =
5 + 10 = 15
c) – [ 10 + (- 8) ] =
- [ 10 - 8] = - 2
d) 15 + [ - 4 – (- 2 + 7)] =
15 + [ - 4 - 5] =
15 + (-9) = 6
e) – 10 + 7 + [ - (- 9)] =
- 10 + 7 + [ 9] =
- 10 + 16 = 6
f) – [ - 2 – (- 1 – 3)] =
- [ - 2 - (-4)] =
-[ - 2 + 4 ] = 6
g) – [ - 3 – 8 – (5 + 4)] =
- [ - 3 - 8 - 9 ] = - 20
h) 4 – 7 – [ - 10 + (5 – 2) + 4] =
4 - 7 [ - 10 + 3 + 4] =
4 - 7 [- 10 + 7 ] =
4 - 7 - 3 = - 6
i) – 10 + [ 2 – 1 + (- 20 + 4)] =
- 10 + [ 2 - 1 + (- 16)] =
- 10 + 1 + ( - 16) =
- 10 + ( -15) = -25
j) 20 – 4 – [ 4 – (- 6 + 10)] =
20 - 4 - [ 4 - 4] =
20 - 4 - 0 = 16