Respostas

2014-02-16T13:24:37-03:00
Y+x=206
x-y=54

2x=206
x=206/2
x=180

x+y=206
180+y=206
y=206-180
y=26
1 1 1
2014-02-16T13:25:44-03:00
X+y=206
x-y=54  ~> x=54+y

x+y=206
(54+y)+y=206
54+2y=206
2y=206-54
2y=152
y=152/2
y=76  

x+y=206
x+76=206
x=206-76
x=130
1 5 1