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OpenStudy (anonymous):
what is a possible first step to eliminate the variable x in the following system? 2x-7y=3 4x+5y=-2 a) multiply the second equation by 2. b) multiply the first equation by 7. c) multiply the first equation by -2. d) multiply the second equation by -3.
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OpenStudy (anonymous):
c)
OpenStudy (anonymous):
grr
OpenStudy (anonymous):
thanks
OpenStudy (anonymous):
multiplying by -2 gives -4x so adding the 2 equations eliminates x
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