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The solution pair is (-7, 22), demonstrated as follows:

(1) x + y = 15 : given;

(2)4x + 3y = 38 : given;

(3)3x + 3y = 45 : equation (1), multiplied by 3;

(4) x = -7 : equation (2), minus equation (3);

(5) y = 22 : equation (1), minus equation (4).

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โˆ™ 2010-05-28 20:35:53
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Q: The order pair for x plus y equals 15 and 4x plus 3y equals 38?
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