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Algebra 10 Online
OpenStudy (anonymous):

What is a possible first step in eliminating a variable in the following system of equations? 4x + 5y = -23 3x + 10y = -14 Choose one answer. A. Multiply the first equation by -2. B. Multiply the second equation by -2. C. Multiply the first equation by 2. D. Multiply the second equation by 2.

OpenStudy (anonymous):

If you do the multiplication A would be the best choice because it would come out to be -8x-10y=46 so the -10y in the first will cancel the +10y in the second.

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