kimberly_18ann
how about if it is fraction? wat will I do 1st?
3x/4 ≥-6
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RolyPoly
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1. Multiply both sides by 4
2. Divide both sides by 3
RolyPoly
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Or
1. Multiply both sides by 4/3
kimberly_18ann
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ok, thank you
kimberly_18ann
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i can't remember if it is negative when you subtract a lower positive number from a higher negative number?
Help pls.
Thank you!
RolyPoly
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2-3 = -1
RolyPoly
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Does it help?
kimberly_18ann
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yes. a big heLp.... now I don't have hesitation in my answer!
Thanks
kimberly_18ann
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wat if negative divide by negative? is it equal to positive?
RolyPoly
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Yes.
RolyPoly
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+ve times +ve = +ve
+ve times -ve = -ve
-ve times -ve = +ve
Same holds for division.
kimberly_18ann
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ahm...okay, I thought It was different rule!
kimberly_18ann
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I got 2 unfinished answers w/ my questions, bcoz now I'm confused which answer will i proceed, which is correct 3x/4 times 4/3 is equal to 12x/7 or 9x*16?
RolyPoly
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\[\frac{3x}{4} ≥-6\]\[\frac{4}{3}\times\frac{3x}{4} ≥-6\times \frac{4}{3}\]Simplify the left and right side.
kimberly_18ann
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I have 2 different answers bcoz I can't remember if it's correct to cross multiply it!
RolyPoly
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\[\frac{4}{3}\times\frac{3x}{4} ≥-6\times \frac{4}{3}\]\[\frac{4\times3x}{3\times 4} ≥\frac{-6\times 4}{3}\]
RolyPoly
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If you don't understand / can't handle this, just use the first method I told you:
1. Multiply both sides by 4
2. Divide both sides by 3
kimberly_18ann
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I've got x≥-8 is my answer correct?
HELP!!!!
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-1
RolyPoly
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-8 is right...
RolyPoly
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I mean x≥-8
mustry
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|dw:1355237549488:dw|
kimberly_18ann
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that's my answer ?right? yes I got it!
RolyPoly
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That's your answer :)
kimberly_18ann
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Thanks!
mustry
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|dw:1355237691283:dw|
RolyPoly
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Welcome :)
mustry
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|dw:1355237876145:dw||dw:1355237936952:dw|