Respostas

2014-05-26T18:35:42-03:00
3y-6=-15
3y = -15 + 6
3y = -9
y = -9/3
y = -3
1 5 1
2014-05-26T18:36:32-03:00
3y-6=-15
3y=-15+6
3y=-9
y=-9÷3
y=-3