Question

Eliminando os parênteses e colchetes,determine o valor de: a)30+[-16-(-7+10)] b)-10-11+(-10-16)+1] b)18-(14+15)-[-(16-21)] c)-10-[11+(-10-6)+1] e)9-(-10)-[-21(-13-13+25)]-(-18) f)11+[-17-(-22+16)+(-29)]-(-46+54)

Answer 1

Olá

Vamos lá

a)30+[-16-(-7+10)]
=30+[-16-3] 
=30-19
=11

b)-10-11+(-10-16)+1]
=-21-26+1] 
=-47+1
=-46

c)18-(14+15)-[-(16-21)]
=18-29-[+5] 
=18-29-5
=-16

d)-10-[11+(-10-6)+1]
=-10-[11+(-17)+1] 
=-10-[11-17+1] 
=-10-[-6+1]
=-10+5
=-5 

e)9-(-10)-[-21(-13-13+25)]-(-18)
=9+10-[-21(-26+25)]+18
=9+10-[-21(-1)]+18
=9+10-[21]+18
=19-21+18
=-2+18
=16

f)11+[-17-(-22+16)+(-29)]-(-46+54)
=11+[-17-(-6)+(-29)]-8
=11+[-17+6-29]-8
=11+[-11-29]-8
=11-40-8
=-29-8
=-37

Bons estudos, dúvidas só chamar !!! :>)) erico munayer