Respuestas

2013-06-11T22:27:17+02:00
4x-3=-5x+6
-3+-6=5x-4x
-9=x
x=9




5x-4=2(x-2)
5x-4=2x-4
5x-2x=-4+4
3x=0
x=0


4(2y+5)=3(5y-2)
8y+20=15y-6
20+6=15-8y
26=7y
y=3.71



6(2y+3)-4(y-5)=0
12y+18-4y+20=0
8y=38
y=4.75