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Using elimination, which variable is easily eliminated in the equations, x + y = 8 and x - y = 2?

A. x
B. y
C. a
D. b​

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  • Using elimination, which variable is easily eliminated in the equations, x + y = 8 and x - y = 2?

• C. A

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Question:

Using elimination, which variable is easily eliminated in the equations, x + y = 8 and x - y = 2?

Answer:

[tex]\displaystyle \boxed{ \Large{ \textsf{B.\ y} } }[/tex]

Why?

If we add the two equation [tex] x + y = 8 [/tex] and [tex] x - y = 2 [/tex], the [tex] y \text{\ variable} [/tex] gets removed immediately.