Respostas

2014-07-19T23:05:18-03:00
3x-5/2+(4-7x)/4=5
3x-5/2+(4-7x)/4 -5=0
12x/4 + 4-7x/4 -10/2 -5/2=0
(12x-7x+4)/4 + (-10-5)/2=0
(5x+4)/4 -15/2=0
5x+4/4=15/2
5x+4=15.4/2
5x+4=60/2
5x+4=30
5x=30-4
5x=26
x=26/5
2014-07-19T23:21:52-03:00
 3x-5/2 + 4-7x /4 = 5
(12x-7x+4)/4 + (-10-5)/2=0
(5x+4)/4 -15/2=0
5x+4/4=15/2
5x+4=15.4/2
5x+4=60/2
5x+4=30
5x=30-4
5x=26
x=26/5