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{x+4y=2
{-x+6y=3
x + 4y = 2
-x + 6y = 3
------------------
10y = 5
y = 5 : 10
y = 1/2
x + 4 * 1/2 = 2
x + 2 = 2
x = 2 - 2
x = 0
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x + 4y = 2
-x + 6y = 3
------------------
10y = 5
y = 5 : 10
y = 1/2
x + 4y = 2
x + 4 * 1/2 = 2
x + 2 = 2
x = 2 - 2
x = 0
x = 0
y = 1/2