Mathematics
Junior High
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腦子轉不過來.....
-x< 17
2>-17
14. 若3.2x<5,且y=80+320x,則y<
x<≤
3.2
y=80
100
320x
S
3.2
y080+500
15. 請在下列空格中填入正確的不等號:
(1)如果3x-5>7,則x
4。
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