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OpenStudy (anonymous):
Use the substitution method to solve y=4x+5 and y=-2x-7
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OpenStudy (anonymous):
do you want me to find y or x?
OpenStudy (anonymous):
umm well i need to fin x and y
OpenStudy (anonymous):
okay thats easy
OpenStudy (anonymous):
to find x... y=4x+5
OpenStudy (anonymous):
I want to think about what is the first step?
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OpenStudy (anonymous):
you
OpenStudy (anonymous):
Well i have to plug in the first equation into the second right?
OpenStudy (anonymous):
No. The 1st step is... to find the y.. you bring -5 into the y side
OpenStudy (anonymous):
find x..
OpenStudy (anonymous):
then you divided by 4
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OpenStudy (anonymous):
|dw:1393289414445:dw|
OpenStudy (anonymous):
Let me show you
OpenStudy (anonymous):
this may sound stupid but why is the 5 now negative?
OpenStudy (anonymous):
No it is |dw:1393289478331:dw|
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