Respostas

2014-03-26T08:42:19-03:00
A) 5(x-2)≤ -2 (x-1)  = 5x-10≤ -2x+2
5x+2x≤10+2
7x≤12
x≤12/7

b) 4-2x>3-2x 
-2x+2x>3-4
0>-1
1 5 1