Q22:
If –2x > 3y, is x negative?
(1) y > 0
(2) 2x + 5y – 20 = 0
the answer is D, why not A??
thx for your answer!!!!
GWD 18-22
版主: shpassion, Traver0818
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Re: GWD18-22
由 enim » 2005-11-15 01:01
nexxt0722 \$m[1]:Q22:
If –2x > 3y, is x negative?
(1) y > 0
(2) 2x + 5y – 20 = 0
the answer is D, why not A??
thx for your answer!!!!
條件二
得出 -2x=5y-20
把-2x代進去-2x>3y
求出y>10
所以x為negative
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