Respostas

2014-01-08T16:04:24-02:00
A) 5x + 6 = -4 
5x=-6-4
5x=-10
x=-10/5
x=-2
b) 3x + 26 = -1
3x=-26-1
3x=-27
x=-27/3
x=-9
c) 3x - 4 = 11
3x=11+4
3x=15
x=15/3
x=5
d) 2x + 3 = 9 
2x=-3+9
2x=6
x=6/2
x=3
e) 18x - 43 = 65
18x=43+65
18x=108
x=108/18
x=6