anonymous
  • anonymous
Explain how to get x=3 from the equation: (5x - 1)/2 + (-3x - 1)/4 = 9/2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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saifoo.khan
  • saifoo.khan
\[\frac{5x-1}{2} + \frac{-3x-1}{4} = \frac92\]that?
anonymous
  • anonymous
Yes
saifoo.khan
  • saifoo.khan
Ok, find the LCD of the left side. it will be 4. so we can write as, \[\frac{2(5x-1) +(-3x - 1)}{4} = \frac92\]Agree?

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anonymous
  • anonymous
Okay..
saifoo.khan
  • saifoo.khan
Now try solving further..
anonymous
  • anonymous
Simplify the top?
saifoo.khan
  • saifoo.khan
Yes.
anonymous
  • anonymous
\[(10x-1) +(-3x-1)/4 =9/2\]
saifoo.khan
  • saifoo.khan
a mistake, it's 10x - 2
anonymous
  • anonymous
oh yeah, that's what I meant haha
saifoo.khan
  • saifoo.khan
ok.. move forward..
anonymous
  • anonymous
\[7x-3/4 = 9/2\]
saifoo.khan
  • saifoo.khan
good going.. now cross multiply.
anonymous
  • anonymous
|dw:1335241220694:dw|
saifoo.khan
  • saifoo.khan
\[14x - 6 = 36\]
anonymous
  • anonymous
Oh, okay. So then I add six to both sides?
saifoo.khan
  • saifoo.khan
Perfect..
anonymous
  • anonymous
then I divide both sides by 14 and get x=2.78
saifoo.khan
  • saifoo.khan
seems correct.
anonymous
  • anonymous
Yay!
saifoo.khan
  • saifoo.khan
;D
anonymous
  • anonymous
Thanks! (:
saifoo.khan
  • saifoo.khan
Welcome.

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