Respostas

2014-08-19T18:52:49-03:00
Y= 5(x-15)
y=5x(-75)
y=5x-75
y=-70x
A melhor resposta!
2014-08-19T18:54:35-03:00
Y = 5x - 15
-5x + 15 = 0
-5x = -15 (*-1)
5x=15
x=15/5 
x=3
1 5 1