Question

1 ) ( -12 ) - ( + 3 ) - ( - 20 ) =
2 ) ( - 5 ) + ( - 8 ) - ( +5 ) =
3 ) ( - 4 ) - ( - 8 ) - ( -5 ) =
4 ) - ( -10 - ( - 20 ) + ( - 30 ) =
5 ) 2 + ( 2 + 5 -7 ) =
¨6 ) -5 + ( 2-4 ) - ( 7-1 ) =
7 ) - ( 2-3- ) - ( -9 ) =

Answer 1

Resposta:

1) = +5

Explicação passo-a-passo:

2) = -18

3) = +9

4) = 0

5) = +2

6) = -6

7) = 14 ou 10