21megoplin
21megoplin
11.02.2022 • 
Mathematics

What is the result of multiplying the first equation by −3 and adding to the second equation? 5x−2y=−2

3x+y=12

A: -10x+8y=15
B: 12x+7y=18
C: -12x+7y=18
D: 8x-y=10

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