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OpenStudy (unbelievabledreams):
What is a possible first step in eliminating a variable in the following system of equations? x + 7y = –15 2x + 7y = –9 Multiply the first equation by –1. Multiply the second equation by –1 Multiply the first equation by –2. All of the above
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OpenStudy (solomonzelman):
IF you multiphe first equation by -2, you will be able to eliminate x
OpenStudy (solomonzelman):
If you multiply the first or second equation times -1, you will be able to eliminate y.
OpenStudy (solomonzelman):
So what do you think ?
OpenStudy (unbelievabledreams):
So it will be D because all of it eliminate..
OpenStudy (solomonzelman):
Yes, correct !
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OpenStudy (unbelievabledreams):
Thanks!
OpenStudy (solomonzelman):
np
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