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What is the average (arithmetic mean) of x, y, and z?

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What is the average (arithmetic mean) of x, y, and z?  [#permalink]

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New post 14 Jan 2019, 23:44
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What is the average (arithmetic mean) of x, y, and z?

(1) —x − 4y + 3z = 14

(2) 5x + 8y + z = 26
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Re: What is the average (arithmetic mean) of x, y, and z?  [#permalink]

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New post 14 Jan 2019, 23:46
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Re: What is the average (arithmetic mean) of x, y, and z?   [#permalink] 14 Jan 2019, 23:46
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What is the average (arithmetic mean) of x, y, and z?

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