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2013-10-17T21:54:30-03:00
 \left \{ {{4x - 3y=14} \atop {x - 2y=6}} \right.

\left \{ {{4x - 3y=14} \atop {x - 2y=6(- 4)}} \right.

\left \{ {{4x - 3y=14} \atop {-4x + 8y= - 24}} \right.

5y = -10
y =  \frac{- 10}{5} = -2

x - 2y=6
x -2(-2) =6
x + 4 = 6
x = 6 - 4 = 2

RESPOSTA:
x = 2 e y = - 2
3 5 3