Odpowiedzi

2009-12-14T20:42:16+01:00
3x + 4y = 1⅔ /(-2)
6x + 3y = 1¼

-6x-8y=-10/3
6x + 3y = 1¼

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-5y=-25/4
y=5/4


y=5/4
6x + 3 5/4 = 1¼

6x=-3 / 6
y=5/4


y=5/4
x=-⅓

2009-12-14T20:43:25+01:00
3x + 4y = 1⅔
6x + 3y= 1¼
x=(5/3-4y)/3 to
6*(5/4-4y)/3 +3y=5/4
x=(5/3-4y)/3
-8y+3y=5/4-10/4
x=(5/3-4y)/3
-5y=5/4 /:(-5)
x=(5/3-4*(-1/4))/3
y=-1/4
x=8/9
y=-1/4