Respostas

2014-05-24T14:16:06-03:00
A) 4X-8=2X+6
4x - 2x = 8 + 6
2x = 14
x = 7

b) 7X+1=6X+6
7x - 6x = 6 -1
x = 5

c) 5X-3=2X-9
5x - 2x = -9 + 3
3x = -6
x = -2
1 5 1
2014-05-24T14:18:24-03:00
A) 4x-2x=6+8 =
2x=14
x=7
b)7x-6x=6-1 =
x=5
c)5x-2x=-9+3 =
3x=-6
x=-2