Respostas

2013-11-18T19:01:57-02:00
2(x+3)-5(x-1)=10
2x+6-5x+5=10
-3x=10-6-6
-3x=-1(-1)
3x=1
x= \frac{1}{3}


3y+3=3(3+2y)-5
3y+3=9+6y-5
3y-6y=9-5-3
-3y=1(-1)
y= \frac{-1}{3}

espero q tenha ajudado ... kk
2 5 2
2013-11-18T19:09:31-02:00