Create an equivalent system of equations using the sum of the system and the first equation.

x + 4y = 8

4x + y = 2

A.)

x + 4y = 8

5x + y = 2

B.)

x + 4y = 8

5x + 5y = 2

C.)

x + 4y = 8

4x + 5y = 10

D.)

x + 4y = 8

5x + 5y = 10

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How do I do this 7:13 21:39

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