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Mathematics 21 Online
OpenStudy (anonymous):

What is a possible first step to eliminate a variable in the following system? 7x - 9y = 2 3x - 6y = -4 Question 3 options: 1) Multiply the first equation by 2 and the second equation by -3. 2) Multiply the first equation by -3 and the second equation by -2. 3) Multiply the first equation by 7 and the second equation by 3. 4) Multiply the first equation by -2 and the second equation by 4.

OpenStudy (anonymous):

1)

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