Respostas

2014-08-27T09:33:24-03:00
10x - 8y = 14
x + y = 4

x = 4 - y
10x - 8y = 14
10 ( 4 - y ) - 8y = 14
40 - 10y - 8y = 14
- 18y = - 26
y = - 26/- 18
y = 1,44

x = 4 - y
x = 4 - 1,44
x = 2,56

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