HELP PLEASE!!!!!!!! Solve the following equation algebraically. See below
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OpenStudy (anonymous):
\[\frac{ 2 }{3 }=2-\frac{ 5x-3 }{x-1 }\]
OpenStudy (anonymous):
do you want just the answer?
OpenStudy (anonymous):
i want to know how to solve it
OpenStudy (anonymous):
well first multiply by 3, then multiply by x-1, then collect like terms and isolate x
OpenStudy (anonymous):
ok so i need to multiply all sides by 3 and x-1
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OpenStudy (anonymous):
i got 2(x-1)=3(2)+2(x-1)-3(5x-3)
OpenStudy (anonymous):
@Kuoministers can you help me please
OpenStudy (kuoministers):
hey mate
OpenStudy (anonymous):
hi
OpenStudy (kuoministers):
yea so just did what he said, which is to multiply everything by 3 and x-1
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OpenStudy (kuoministers):
that would give you
\[2 = 6 - \frac{ 15x-9}{ 3x - 3 }\]
OpenStudy (kuoministers):
hmm you would multiply everything by 3x - 3 :P now
OpenStudy (anonymous):
cant you cross multiply the 3 and x-1 at the same time
OpenStudy (kuoministers):
\[6x- 6=18x-18x+(15x - 9)(3x-3)\]
OpenStudy (kuoministers):
maybe but i dont think so as there is a 2 in the equation
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OpenStudy (kuoministers):
\[6x - 6 = 18x - 18 + 45x ^{2} - 45x -27x + 27\]
OpenStudy (kuoministers):
\[0=45x ^{2} - 60 +15\]
OpenStudy (kuoministers):
now i think you can work it out
OpenStudy (kuoministers):
hint: 2 numbers you can use is 15 and 45
OpenStudy (anonymous):
should that be 60x
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OpenStudy (kuoministers):
oh yes my bad
OpenStudy (kuoministers):
can you work it out now?
OpenStudy (anonymous):
yes thank u
jimthompson5910 (jim_thompson5910):
Hint:
\[\Large \frac{ 2 }{3 }=2-\frac{ 5x-3 }{x-1 }\]
Multiply every term by the LCD 3(x-1) to get
\[\Large \frac{ 2 }{3 }*3(x-1)=2*3(x-1)-\frac{ 5x-3 }{x-1 }*3(x-1)\]
\[\Large 2(x-1)=6(x-1)-3(5x-3)\]
OpenStudy (anonymous):
2x-2=6x-6-15x-9
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OpenStudy (anonymous):
now i need to combine like terms
jimthompson5910 (jim_thompson5910):
should be +9 at the end, not -9
OpenStudy (anonymous):
so x=5/11
jimthompson5910 (jim_thompson5910):
yep
OpenStudy (anonymous):
so to check my answer i could replace x with 5/11 and it should work out to equal 2/3
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jimthompson5910 (jim_thompson5910):
yes, ideally replacing each x with the supposed solution should make both sides equal to one another