Question

qual expressão tem o valor -10

a)80+20-60-10
b)30-10-10+20
c)10-10+10-20
d)-10-30+20+50

Answer 1

a) 80+20-60-10 = 100-70 = 30

b) 30-10-10+20 = 20+10 = 30

c) 10-10+10-20 = 0-10 = -10

d) -10-30+20+50 = -40+70 = 30

Answer 2

a resposta é a letra c