Question

Elimine os parênteses e caucule : A) 7- ( -6 ) - ( -8 ) B) - 8 + ( -6 ) - ( +3 ) C) 5 - 6 - ( +7 ) + 1 D) - 28 + 7 + ( + 12 ) + ( -1 ) - 6 E) - 21 -7 -6 - ( -15 ) -2 - ( -10 ) F) 10 - ( -8 ) + ( -9 ) - ( -12 ) -6 +5

Answer 1

A)21
B) -17
C) -7
D) -16
E) -11
F) 20

Answer 2

Olá

Vamos lá,

A)
=7- ( -6 ) - ( -8 )
=7+6+8
=21

B)
=- 8 + ( -6 ) - ( +3 )
=-8-6-3
=-17

C)
=5 - 6 - ( +7 ) + 1
=5-6-7+1
=-1-7+1
=-7

D)
=- 28 + 7 + ( + 12 ) + ( -1 ) - 6
=-28+7+12-1-6
=-21+12-1-6
=-9-1-6
=-10-6
=-16


E)
=- 21 -7 -6 - ( -15 ) -2 - ( -10 )
=-21-7-6+15-2+10
=-28-6+15-2+10
=-34+15-2+10
=-19-2+10
=-21+10
=-11


F)
=10 - ( -8 ) + ( -9 ) - ( -12 ) -6 +5
=10+8-9+12-6+5
=18-9+12-6+5
=9+12-6+5
=21-6+5
=15+5
=20

Bons estudos, dúvidas só chamar !!! :))