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OpenStudy (hanna1):
plz help will medal and fan!!
Solve for Y
4x-5y=9
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HanAkoSolo (jamierox4ev3r):
First, you want to get "y" on one side of the equation. Any ideas on how to do this? @hanna1
OpenStudy (hanna1):
not with this problem
HanAkoSolo (jamierox4ev3r):
okay. First, we want to subtract 4x from both sides, like this:
4x-5y=9
-4x -4x
--------
-5y = -4x+9
OpenStudy (hanna1):
okay?
HanAkoSolo (jamierox4ev3r):
Does that make sense so far?
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OpenStudy (hanna1):
nope cuz u can subtract 4x from 9
HanAkoSolo (jamierox4ev3r):
no, you add the 4x to the 9...it's basically moving 4x to the other side of the equation
OpenStudy (hanna1):
oh okay
HanAkoSolo (jamierox4ev3r):
Now, do you have any ideas on what to do next?
(Hint: we have only one more step!)
OpenStudy (hanna1):
nope
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HanAkoSolo (jamierox4ev3r):
Okay.
You want to divide everything by -5 to isolate y.
OpenStudy (hanna1):
okay
HanAkoSolo (jamierox4ev3r):
It would look like this:
-5y = -4x+9
/-5 /-5 /-5
------------
?
Try to see what you would get. I'll help you if needed
OpenStudy (hanna1):
thx
HanAkoSolo (jamierox4ev3r):
no problem. What did you get?
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OpenStudy (hanna1):
y=4/5x-9/5
HanAkoSolo (jamierox4ev3r):
correct :)
OpenStudy (hanna1):
thx so much<3
HanAkoSolo (jamierox4ev3r):
no problem :)
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