Question

12. Calcule: (Faça o cálculo)
a) + 7 -5 + 10 - 13 =
b) 2-8 + 10 - 15 - 2 + 20 =​

Answer 1

a)+7+10=17/-5-13=-18

reposta=17-18=-1

b)+2+10+20=32|-8-15-2=-25

reposta=7