Question

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x + y = 8

x - 2y = 4

If you want to solve the system of equations by addition, which of the following could you do?


Multiply the first equation by -2 and add.
Multiply the first equation by 2 and add.
Multiply the second equation by -2 and add.
Multiply the second equation by 2 and add.

Answer 1

The second one is the answer

Answer 2

Explanation:

Multiply the first equation by 2 and add.