Question

18) Dados:
A = 4 − 6
B = 1+ 7 − 3 + 2
C = −3 + 5 −1+ 6
a) A + B
b) A + C
c) B + C
d) A + B + C

Answer 1

comece resolvendo os dados.
A = 4-6 = -2
B = 1+7-3+2 = 7
C = -3+5-1+6 = 7

partindo para as contas
a) A + B = -2 + 7 = 5
b) A + C = -2 + 7 = 5
c) B + C = 7 + 7 = 14
d) A + B + C = -2 + 7 + 7 = 12