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OpenStudy (anonymous):
An equation is shown below:
\[\frac{ 3 }{ 2 }x +\frac{ 7 }{ 2 }=2x\]
What is the solution to the equation?
OpenStudy (anonymous):
@pooja195
OpenStudy (anonymous):
Put all the x's on on side. Since 2x is already by itself I would move (3/2)x
OpenStudy (anonymous):
What will that turn the equation into?
OpenStudy (skullpatrol):
Subtract (2/3)x from both did
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OpenStudy (anonymous):
\[\frac{ 7 }{ 2 }=2x+\frac{ 3 }{ 2 }x\]
OpenStudy (anonymous):
no it was positive (3/2)x on the other side so you would want to subtract it from both sides
OpenStudy (anonymous):
So it would look like \[7/2 = 2x-(3/2)x\]
OpenStudy (anonymous):
ohh ok
OpenStudy (anonymous):
So what is 2-(3/2)?
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OpenStudy (anonymous):
1?
OpenStudy (anonymous):
not quite when subtracting fractions remember to find the common denominator. So 2/1 and 3/2 have a common denominator of 2. So it will essentially be (4/2) - (3/2) = 4-3/2. Which is 1/2
OpenStudy (anonymous):
So on the right side you know have 1/2x
OpenStudy (anonymous):
oh ok
OpenStudy (anonymous):
*now
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OpenStudy (anonymous):
wouldn't you have to divide both sides by 1/2?
OpenStudy (anonymous):
Yes and that gives you?
OpenStudy (anonymous):
1 3/4 = x is what I got
OpenStudy (anonymous):
@TheDream are you there?
OpenStudy (anonymous):
not quite remember that dividing by 1/2 is the same as multiplying by 2. So 7/2 *2 equals what?
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OpenStudy (anonymous):
I got 7
OpenStudy (anonymous):
Yep that looks about right good job.
OpenStudy (anonymous):
but that's not an answer choice....
OpenStudy (anonymous):
really what are the choices?
OpenStudy (anonymous):
x = 1 x = 3 x = 5 x = 8
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OpenStudy (anonymous):
did you write the question correctly?
OpenStudy (anonymous):
yess
OpenStudy (anonymous):
oh wait... no I didnt
OpenStudy (anonymous):
because 7 is definitely the solution to that equation
OpenStudy (anonymous):
the 2 is to the x power
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OpenStudy (anonymous):
so it is \[2^x \] not \[2x\]
OpenStudy (anonymous):
and everything else is the same?
OpenStudy (anonymous):
yep
OpenStudy (anonymous):
\[\frac{ 3 }{ 2 }x+\frac{ 7 }{ 2 }=2^{x}\]
OpenStudy (anonymous):
kk just a minute. Way different problem now I know the answer but I want to find a good solution
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OpenStudy (anonymous):
Lol ok thank you so much for your help btw :D
OpenStudy (anonymous):
What kind of class is this for?
OpenStudy (anonymous):
Algebra 1 Honors
OpenStudy (anonymous):
I can't seem to solve it analytically but I did find the answer by graphing the function. Or simply by just plugging in the different x's into the equation.
OpenStudy (anonymous):
Try to ask someone else maybe there is a simple solution I am missing but this seems like an extremely messy problem.
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