8-5/8x>9 what is the solution set solve the linear inequality
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OpenStudy (pfenn1):
Rearrange this inequality so x is on one side of the inequality and the numbers are on the other. Do you know how to do this?
OpenStudy (anonymous):
can you help me
OpenStudy (pfenn1):
\[8-\frac{5}{8x}>9\]Subtract 8 from both sides.
OpenStudy (anonymous):
is it 8-8
OpenStudy (pfenn1):
Close.\[\cancel8-\cancel8-\frac{5}{8x}>9-8 \]Which simplifies to \[\frac{-5}{8x}>1\]Do you know what to do now?
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OpenStudy (anonymous):
no
OpenStudy (pfenn1):
Try to multiply each side of the inequality by 8x. What do you get?
OpenStudy (anonymous):
not sure
OpenStudy (pfenn1):
Did you try it?
OpenStudy (anonymous):
i do not know where to start
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OpenStudy (pfenn1):
Let's try to multiply both sides of the inequality by x (instead of 8x). I am trying to get just x on one side of the inequality and all the numbers on the other side.\[x \times \frac{-5}{8x}>1 \times x\] What is the resulting inequality?
OpenStudy (anonymous):
1*x
OpenStudy (pfenn1):
Okay. That is what you get on the right side of the inequality. But what do you get on the left side of the inequality?
OpenStudy (anonymous):
not sure
OpenStudy (pfenn1):
what is \[x \times \frac{-5}{8x}\]
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OpenStudy (anonymous):
the solution set
OpenStudy (pfenn1):
?
OpenStudy (anonymous):
x*-5/8x
OpenStudy (pfenn1):
\[\cancel x \times \frac{-5}{8\cancel x}>1 \times x\]The inequality now simplifies to \[\frac{-5}{8}>x\]
OpenStudy (anonymous):
so is that the solution-5/8>x
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OpenStudy (pfenn1):
Yes. I think you need to work on how to rearrange equations and inequalities to find a solution.