Question

1) efetue as operações abaixo:

a) (+10)+(-12)-(+15)+(+20)=
b) (-18)-(+25)+(-13)-32=
c) -45+32-18+45-8+18=​

Answer 1

a) (+10)+(-12)-(+15)+(+20)= 3

b) (-18)-(+25)+(-13)-32= - 88

c) -45+32-18+45-8+18=​ 24

Answer 2

Explicação passo-a-passo:

a) 10-12-15+20 = 30-27 = 3

b) -18-25-13-32 = -88

c) 24