Respostas

2014-07-24T22:34:22-03:00
X-3>8
x>8+3
x>11

2x+3>8
2x>8-3
2x>5
x>5/2

x+3>2x
-x>-3 .(-1)
x<3

x-6<2x-1
-x<4 .(-1)
x>-4