Respostas

2014-08-04T10:16:20-03:00
X + y = 35 
y = 35 - x 
x/y = 1/4
x/(35 - x) = 1/4
1 . (35 - x) = 4 . x 
35 - x = 4x 
35 = 4x + x 
5x = 35 
x = 35/5 
x = 7 
Se (y = 35 - x): 
y = 35 - 7 
y = 28 
7/28 = 1/4
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