- #1
crays
- 160
- 0
Hi, can someone tell me when should i change my sign when i have such a problem?
-(75/x) > 15
i find that if -75/x > 15
i could do :
-75 > 15x
-5 > x
x < -5.
or 75/-x > 15
i could do :
75 < -15x
-5 > x
which the answer in the book says -5 < x < 0
Thanks.
-(75/x) > 15
i find that if -75/x > 15
i could do :
-75 > 15x
-5 > x
x < -5.
or 75/-x > 15
i could do :
75 < -15x
-5 > x
which the answer in the book says -5 < x < 0
Thanks.