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twoifbysea
Advisor
You solve for "m" using PEMDAS in reverse order.
Basically, try to get "m" by itself on one side of the equal sign. Once you have those answers, plug them back into the original equation to make sure they work. Cos sometimes you can get answers from the problem that don't work, so always go back and plug them in to double check.
------- Don't take life too seriously, you won't get out alive.
7:14 pm on Oct. 2, 2008 | Joined Sep. 2008 | 10 Days Active Join to learn more about twoifbyseaTexas, United States | Label FreeFemale | 468 Posts | 602 Points
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asb
Dairy Product Addict
What the heck's PEMDAS? And I think you missed some brackets...
2/m = m/(5m + 12)
multiply through by m, then by (5m+12)
2/m * m * (5m + 12) = m/(5m + 12) * m * (5m + 12) 2(5m + 12) = m^2 m^2 - 10m - 24 = 0 (m + 2)(m - 12) = 0 so m = -2 or m = 12
1:55 pm on Oct. 3, 2008 | Joined June 2006 | 115 Days Active Join to learn more about asbEngland, United Kingdom | StraightMale | 218 Posts | 1369 Points
MagicHunter
Dairy Product Addict
PEMDAS is a mnemonic acronym for the order of operations- standing for- parentheses, exponents, multiplication, division, addition, subtraction.
------- One should always struggle, with the complete life-giving might of one's will, for no other reason than it is terribly romantic.
11:14 pm on Oct. 3, 2008 | Joined Nov. 2005 | 238 Days Active Join to learn more about MagicHunterWashington, United States | 593 Posts | 2936 Points
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