Question

Vcs podem me ajudar nessa conta 20- {-10-[-8+(15-12)]-20}

Answer 1

20- {-10-[-8+(15-12)] - 20}
20- {-10-[-8+3]-20}
20- {-10+5-20}
20+25 = 45

Answer 2

20-{-10-[-8+(15-12)]-20}
20-{-10-(-8+3]-20}
20-{-10+5-20}
20+25
45