Question

o valor da expressão 35+(+20)+(-12)+(-14)-(-16)-(18)-(-20) é; a)73 b)78 c)-73 d)83

Answer 1

35+(+20)+(-12)+(-14)-(-16)-(18)-(-20)=
35+20-12-14+16-18+20=
35 +20+16+20-12-14-18=
55+36-26-18=
81-26-18=
65-(-18)=
65+18=73
Alternativa A)