Question

resolva:
a) ( +3 )+( +7 )=

b) ( +4 )+( +9 )=

c) ( +6 ) + ( +12 ) + ( +2 )=

d) ( +8 ) + ( +2 ) + ( +0 ) + ( +5 )=

e) ( +10 ) + ( +2 ) + ( +3 ) + ( +5 )=

​

Answer 1

Resposta:

a) 10

b) 13

c) 20

d) 15

e) 20