please tell me how u did this
2007-12-02 04:29:03 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
(1/3) x > - 2
x > - 6
2007-12-02 07:07:03 · answer #1 · answered by Como 7 · 4⤊ 1⤋
To isolate x, divide both sides of the inequality by -1/3. The easier way to divide fractions is by multiplying by the reciprocal, -3/1, or just -3.
-3 * (-1/3)x < 2 * -3
-3 and -1/3 cancel out, so you're left with:
x> -6
**Don't forget** Whenever you multiply or divide by a negative number in an inequality, the inequality sign MUST be switched!
Really, are you people serious with the thumbs down? My answer and explanation are entirely logical and correct. No need to be catty about not getting the first answer.
2007-12-02 04:32:28 · answer #2 · answered by victoria 5 · 2⤊ 1⤋
-1/3x < 2
=> (1/3) x > (-)2
[ we can change the sign of both the sides after reversing the inequality sign. We should always make the x-term +ve]. Multiply both the sides by 3.
=> x > - 6 ............. Answer.
2007-12-02 04:38:37 · answer #3 · answered by Pramod Kumar 7 · 1⤊ 1⤋
Multiply both sides by -3:
-3(-1/3)<-3(2)
x<2(-3)
x>-6
The reason why the sign changed is because both sides were multiplied by a negative number.
2007-12-02 04:34:10 · answer #4 · answered by Anonymous · 1⤊ 0⤋
x > -6
when you have to divide to find the value of the variable then the sign changes.
2007-12-02 04:34:39 · answer #5 · answered by Matty B 3 · 2⤊ 0⤋