Respostas

2014-06-29T20:17:38-03:00
!º pergunta :47+ 38+x=110

47 + 38 + x = 110
85 + x = 110
x = 110 - 85
x = 25

2º Pergunta: -2x -1000=0

-2x - 1000 = 0
-2x = 1000
x = 1000/-2
x = - 1000/2
x = - 500