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Manny says he should multiply the first equation in the system of equations below by 3 and the second equation by 2, then add to eliminate x. Is there a more efficient way to solve this system? Explain your answer.

−2x+y=15
3x+4y=−12
A. No, there isn't a more efficient way to solve this system.
B. Yes, a more efficient way is to multiply the first equation by −4
add to eliminate y, then solve for x.
C. Yes, a more efficient way is to multiply the first equation by −4
add to eliminate x, then solve for y.
D. Yes, a more efficient way is to multiply the first equation by 4
add to eliminate y, then solve for x.

User Moictab
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1 Answer

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Explanation:

A,No, there isn't a more efficient way to solve this system.

B.Yes, a more efficient way is to multiply the first equation by 4, add to eliminate y, then solve for x.

C.Yes, a more efficient way is to multiply the first equation by −4, add to eliminate y, then solve for x.

D.Yes, a more efficient way is to multiply the first equation by −4, add to eliminate x, then solve for y.

User OrenIshShalom
by
8.3k points

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