anonymous
  • anonymous
I'm going to try this one more time, please help as my brain is completely fried, I am trying to solve a simple equation for x .............. x/3 - 7/8 = 2/5(x + 15/4) What I have so far is this: x/3 - 7/8 = 2/5(x + 15/4) x/3 - 7/8 = 2/5x + 3/2 x/3 - 7/8 + 7/8 = 2/5x + 3/2 + 7/8 x/3 = 2/5x + 51/40 Now here is where I got a little stuck, x/3 - 2/5x = 2/5x - 2/5x + 51/40 ? = 51/40 Am I wrong so far, this is how we did it for practice?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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amistre64
  • amistre64
why do you insist on beating your head against fractions?
amistre64
  • amistre64
clear them out and ply with the integers
anonymous
  • anonymous
I don't understand

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amistre64
  • amistre64
you dont understand what ???
amistre64
  • amistre64
fractions are intrinsically difficult to work with simply because we do not "think" in fractions ....
amistre64
  • amistre64
recall that an equation remains balanced by doing the same thing to both sides ....
anonymous
  • anonymous
Let me try to explain, I am 43 years old, I have not taken an algebra class since 9th grade and I barely made it through that. I am a graphic designer working on getting my BA who has absolutely NO USE for any of this, but I have to take it. This teacher is big on formulas, and on the practice problems we did on Tuesday, this was the method we were using for all the other problems so I assumed it was the same for this, I DON'T UNDERSTAND THIS STUFF, so when you ask me questions, I'm sitting here with a blank expression on my face........
amistre64
  • amistre64
i turned 40 last week, and im going to college to get a BA in Math :)
anonymous
  • anonymous
I'm with you on the I don't think in fractions, I SUCK at fractions, but I don't know how else to do this
anonymous
  • anonymous
YIKES, YOUR INSANE
anonymous
  • anonymous
lol
amistre64
  • amistre64
thats besides the point lol
anonymous
  • anonymous
I honestly don't have a clue what I am doing, but it's already 12:19 am my time, and I have to get up for work at 6 am, this is killing me
anonymous
  • anonymous
and I'm only on question 2 of 10
anonymous
  • anonymous
for the record, this is now the second time I am trying to pass this class, I didn't even come close the first time
amistre64
  • amistre64
x/3 - 7/8 = 2/5(x + 15/4) ; lets be smart about this and clear out the fractions x/3 - 7/8 = 2/5(x + 15/4) ; lets start by multiplying both sides by 3 x.3/3 - 7.3/8 = 2.3/5(x + 15/4) ; since 3/3 = 1 that "clears" the fraction x - 21/8 = 6/5(x + 15/4) ; and we keep doing that; this time by "8" 8.x - 21.8/8 = 6.8/5(x + 15/4) ; 8/8 = 1 and clears the fraction 8x - 21 = 48/5(x + 15/4) ; and again, but by 5 this time 8.5x - 21.5 = 48.5/5(x + 15/4) ; since 5/5 = 1 .... 40x - 105 = 48(x + 15/4) ; now we do it one last time to clear the "4" 40.4x - 105.4 = 48.4(x + 15/4) 160x - 420 = 192(4x + 15) now we are out of fraction
amistre64
  • amistre64
the numbers are big, but id take big over fractured any day
amistre64
  • amistre64
160x - 420 = 768x + 2880 -2880 -2880 -------------------------- 160x-2300 = 768x -160x -160x ------------------- -2300 = 608x x = -2300/608
amistre64
  • amistre64
since they are even we can split them in half over and over again :) 2300/2 = 1150/2 = 575 ------ ------- ---- 608/2 304/2 152 so if we are lucky, x = -575/152 but we would have to dbl chk to make sure
amistre64
  • amistre64
x = -285/8 in the end
anonymous
  • anonymous
good grief, the double check is going to kill me....lol
amistre64
  • amistre64
i see my mistake, its towards the end; I actually used that "4" twice ...
amistre64
  • amistre64
40.4x - 105.4 = 48.4(x + 15/4) 160x -420 = 48(4x+15) 160x -420 = 192x+720 -720 -720 ----------------------- 160x-1140 = 192x -160x -160x ------------------- -1140 = 32x x = -1140/32 = -570/16 = -285/8
amistre64
  • amistre64
now that works out :)
anonymous
  • anonymous
ty, I'm going to try to write all that out the correct way.............good luck to me...lol
amistre64
  • amistre64
:) good luck
anonymous
  • anonymous
thanks, I'm going to need it, I have to pass this class eventually, I just hope I can do it this time because it's the last one
amistre64
  • amistre64
your time is on the east coast
anonymous
  • anonymous
yea
amistre64
  • amistre64
im in florida
anonymous
  • anonymous
me too...lol Ft. Myers
amistre64
  • amistre64
Tampa ish
anonymous
  • anonymous
OMG, you have to come down here and help me.....lol
amistre64
  • amistre64
with the price of gas at 4$ lol
anonymous
  • anonymous
lol
amistre64
  • amistre64
ever been to Dade City?
anonymous
  • anonymous
no
anonymous
  • anonymous
Great work @amistre64 and @lilangl :)
amistre64
  • amistre64
well ive been to FtMyers back when I was able to tent houses
amistre64
  • amistre64
uhoh, if you stand real still he gets confused and goes away :)
anonymous
  • anonymous
not on my end....lol
anonymous
  • anonymous
lol
anonymous
  • anonymous
:-/ Where'd you go?
amistre64
  • amistre64
im going to bed, got diffyQs and other stuff in the am ;) Gnite
anonymous
  • anonymous
I have a feeling my test is going to be late, there is no way I'm going to get this done, it took me almost 12 hours to do 10 practice problems, I have 10 test questions but they are of course even harder........ It's just not humanly possible with a full time job and family to get something like this done in one night.
anonymous
  • anonymous
gn ty for your help

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