Question

74 3 Renstre (a) (13 + 2. [19-2×2]) (6)(3.[4+5.6]- (18-216)) (C) (15+8 [4+5 (43-71])​

Answer 1

Resposta:

a) (13 + 2. [19-2×2])

=13+2(19−4)

=13+(2)(15)

=13+30

=43

b)(3.[4+5.6]- (18-216))

=3(4+30)−(18−216)

=(3)(34)−(18−216)

=102−(18−216)

=102−(−198)

=300

(C) (15+8 [4+5 (43-71])​

=15+8(4+(5)(−28))

=15+8(4+−140)

=15+(8)(−136)

=15+−1088

=−1073

Explicação passo a passo: