Question

(+3)+(−5)+(+8)+(+5)
(+4)+(-3)+(+2)
(+20)+(+3)+(-5)+(+9)+(-2)

Answer 1

(+3)+(−5)+(+8)+(+5) =

3 − 5 + 8 + 5  =

16 − 5  = 11

(+4)+(-3)+(+2) =

4 - 3 + 2 =

6 - 3 = 3

(+20)+(+3)+(-5)+(+9)+(-2) =

20 + 3 - 5 + 9 - 2 =

32 - 7 = 25