Respostas

2014-04-03T15:47:38-03:00
A) (12; 12 + 7; 19 + 7; 26 + 7; 33 + 7) = (12; 19; 26; 33; 40)

b) (12; 12 - 1; 11 - 1; 10 - 1; 9 - 1) = ( 12; 11; 10; 9; 8)

c) ( 12; 12 - 0,25; 11,75 - 0,25; 11,5 - 0,25; 11,25 - 0,25)= (12; 11,75; 11,5; 11,25; 11)