Question

Gente me ajudem?? Eu preciso das contas montadas ?? Por favor

Answer 1

a.-) 16 - ( 1 + 3 - 5 ) + ( 8 - 9 )
==>16 - ( 4 - 5 ) + ( - 1 )
==> 16 - (-1) + ( - 1 )
==> 16 + 1 - 1
==> 17 - 1
==> 16

b.-) 1 . 7 + ( 5 - 4 ) . ( 2 - 7 - 8 )
==> 7 + ( - 1 ) . ( - 5 - 8 )
==> 7 - 1 . (- 13 )
==> 7 . ( -13 )
==> - 91

c.-) 100 - ( 70 + 25 ) - ( 90 - 35 )
==> 100 - ( 95 ) - ( 55 )
==> 100 - 95 - 55
==> 5 - 55
==> - 50

d.-) - 17 + ( 18 - 17 - 1 ) - ( 35 + 33 + 2 )
==> - 17 + ( 1 - 1 ) - ( 68 + 2 )
==> - 17 + 0 - 70
==> - 17 - 70
==> - 87

e.-) - 23 - ( -75 + 19 ) + ( - 45 + 42 - 30 )
==> - 23 - ( - 56 ) + ( - 3 - 30 )
==> - 23 + 56 + ( - 33 )
==> 33 - 33
==> 0