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5x + 2y = 8 x + y = 4 If you want to solve the system of equations by addition, which of the following could you do? Multiply the second equation by 5 and add. Multiply the second equation by 2 and add.
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5x + 2y = 8

x + y = 4

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

Multiply the second equation by 5 and add.
Multiply the second equation by 2 and add.
Multiply the second equation by -2 and add.

User Neil Best
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mult the 2nd by 2 then add. this eliminates one of the variables (y) and allows you to solve the other one x
User Xavier Brassoud
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8.3k points
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