Question

efetue as seguintes somas :
a) (+21)+(-18)=
b) (+63)+(+32)=
c) (+22)+(-13)=
d) (+39)+(87)=​

Answer 1

a) (+21)+(-18)= 3

21-18= 3

b) (+63)+(+32)= 95

63+32=95

c) (+22)+(-13)= 9

22-13=9

d) (+39)+(87)= 126

39+87=129

Bons estudos