Question

calcule adiçoes
1- (+20)+(+3)+(-5)+(+9)+(-2)
2- (+120)+(-3)+(-5)+(-9)
3-(-8)+(+10)+(-7)+(-2)
4- (+20)+(+18)+(-14)+(-20)

Answer 1

1) R: 25

2) R: 103

3) R: -3

4) R: 4