Question

1)resova as expressões nunericas:
A)5-[(7-4)-6]=
B)3+[(7-8)52=
C)-5.[8-(7-5)-2]=
D)1+[-32-(10-40)]}=
E)-{-15-[-12-(10-15)}]=
F)8-{[2-32-45)-9]+5}=
G)-4-5.2+1=
I)25:5-32=
J)(13-9)2+5=
K)7-2[(11-15:4)=
Me ajudem por favor!!!

Answer 1

Resposta:

Explicação passo-a-passo:

A)5-[(7-4)-6]= 5-[3-6]= 5-[-3]=8

B)3+[(7-8)52]=3+[-1*52]=3+(-52)= -49

C)-5.[8-(7-5)-2]=  -5.[8-2-2]= -5.4= -20

D)1+[-32-(10-40)]=  1+[-32-(-30)]= 1+[-32+30]= 1+(-2)= -1

E)-{-15-[-12-(10-15)]}= -{-15-[-12-(-5)]}= -{-15-[-12+5]}=-{-15-[-7]}=-{-15+7}=-{-8}=8

F)8-{[(2-32-45)-9]+5}= 8-{[-75-9]+5}=8-{-84+5}=8-{-79}=8+79=87

G)-4-5.2+1= -4-10+1=-13

I)25:5-32= 5-32= -27

J)(13-9)2+5=  4.2+5= 8+5= 13

K)7-2[(11-15):4]=7-2.[-4:4]=7-2.(-1)=7+2=9