Question

me ajuda por favor gente ​

Answer 1

Resposta:

a) -6÷[-5+3]×7

-6÷(-2)×7

+3×7 ( virou +3 pq os sinais são iguais)

=21

b) [-17+(11-16)]-{2-[(-2+7)×(25-2)]}

[-17-5]-{2-[+5×23]

-22-{2-115}

-22+113

=91

c) 3×(-3)×(-2)÷(-3)

-9×(-2)×(-3)

+18×(-3)

=-6

d) 12-{2×6+2-[5×(-6)÷(-3)]}+34

12-{2×6+2- [-30÷(-3)]}+34

12-{2×6+2-[+10]}+34

12-{12+2-10}+34

12-{14-10}+34

12-{4}+34

12-4+34

12+34-4

46-4

=42