MichaelaRose
Explain how to get x=3 from the equation:
(5x  1)/2 + (3x  1)/4 = 9/2



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saifoo.khan
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\[\frac{5x1}{2} + \frac{3x1}{4} = \frac92\]that?

MichaelaRose
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Yes

saifoo.khan
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Ok,
find the LCD of the left side. it will be 4.
so we can write as,
\[\frac{2(5x1) +(3x  1)}{4} = \frac92\]Agree?

MichaelaRose
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Okay..

saifoo.khan
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Now try solving further..

MichaelaRose
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Simplify the top?

saifoo.khan
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Yes.

MichaelaRose
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\[(10x1) +(3x1)/4 =9/2\]

saifoo.khan
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a mistake,
it's 10x  2

MichaelaRose
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oh yeah, that's what I meant haha

saifoo.khan
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ok.. move forward..

MichaelaRose
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\[7x3/4 = 9/2\]

saifoo.khan
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good going.. now cross multiply.

MichaelaRose
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dw:1335241220694:dw

saifoo.khan
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\[14x  6 = 36\]

MichaelaRose
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Oh, okay. So then I add six to both sides?

saifoo.khan
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Perfect..

MichaelaRose
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then I divide both sides by 14 and get x=2.78

saifoo.khan
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seems correct.

MichaelaRose
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Yay!

saifoo.khan
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;D

MichaelaRose
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Thanks! (:

saifoo.khan
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Welcome.