anonymous
  • anonymous
Challenge! Ready? What is the solution to the proportion, 3y-8/12= y/5? Show me your work so that I, Lolly, know you are not cheating. THIS IS A PROPORTION; where you cross multiply.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
This is not simple algebra.
DanJS
  • DanJS
is [3y-8]/12 the left side...
DanJS
  • DanJS
\[\frac{ 3y-8 }{ 12 }=\frac{ y }{ 5 }\]

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More answers

anonymous
  • anonymous
yes
anonymous
  • anonymous
Sorry for not saying.
DanJS
  • DanJS
ok, remember to group the numerator if multiple terms...
DanJS
  • DanJS
so if you multiply both sides by a common denominator... in this case (12*5), you,,, nevermind just do the cross multiply thing 5*(3y-8) = 12*y
DanJS
  • DanJS
can you distribute the 5 into that parenthesis term ?
anonymous
  • anonymous
\[\large \sf 15y-40=12y\]\[\large \sf 3y=40\]\[\large \sf y=\frac{40}{3}\] Right?
AbdullahM
  • AbdullahM
Hint: \(\sf \Large\frac{a}{b} = \frac{c}{d} \to ad = bc\) And this question as a challenge, and asking for work seems rather suspicious to me...
anonymous
  • anonymous
MM. You guys are not getting it. : OO
anonymous
  • anonymous
Are you saying I'm wrong?
anonymous
  • anonymous
yup
AbdullahM
  • AbdullahM
Could you please write this: 3y-8/12= y/5 using the equation button or the draw tool?
anonymous
  • anonymous
I checked my work, and that's what makes the two sides equal...
anonymous
  • anonymous
|dw:1436486836928:dw|
anonymous
  • anonymous
lol that drawing
AbdullahM
  • AbdullahM
If that is the proportion then @LegendarySadist is correct...
anonymous
  • anonymous
|dw:1436486880595:dw|
anonymous
  • anonymous
\[\large \sf \frac{3(\frac{40}{3})-8}{12}~=~ \frac{40}{3 \times 5}\] \[\large \sf \frac{40-8}{12}=\frac{40}{15}\]\[\large \sf \frac{32}{12}~=~\frac{40}{15}\]\[\large \frac{8}{3}~=~\frac{8}{3}\]
anonymous
  • anonymous
In what way am I wrong? I just proved my answer...
anonymous
  • anonymous
Shoot man. I think you did do it right
anonymous
  • anonymous
Im the one that did it wrong D:
zepdrix
  • zepdrix
buhaha, i hate when that happens c:
zepdrix
  • zepdrix
you forget to multiply the 8 and the 5 lolly? :3
anonymous
  • anonymous
.....maybe 0-0
anonymous
  • anonymous
lullll

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