Question

me ajudaaaaa e pra hjjjj

Answer 1

Resposta:

a)

Explicação passo-a-passo:

1)a) 3. (-5+2)≈ 3. -7 ≈ - 21

b)-4 . (-6+9)= -4.-15=+70

c)(-7+21).(-5)= -28 .(-5)=-28.-5=120

d)(8-24). 7 = 86.7=602

2) a) (-9).(-6+5)= +54+45= 99

b) (-25).(-10-1)=+250+25=+275

c)(-34).(+5+2)=-170-68=-102

d)(+25).(-12+2)=-300+50=-350

e)(+10).(-23+54)=-230+540=-480

f)(-27).(+9-1)=-240+27=-267