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Mathematics, 01.07.2019 07:10 keyceebhe7621

Given the following system of equations:
−4x + 8y = 16
2x + 4y = 8
what action was completed to create this new equivalent system of equations?
−2x + 4y = 8
2x + 4y = 8
a. multiply the second equation, 2x + 4y = 8, by −1.
b. multiply the first equation, −4x + 8y = 16, by −1.
c. divide the second equation, 2x + 4y = 8, by 2.
d. divide the first equation, −4x + 8y = 16, by 2.

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