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03-10-2008, 06:51 PM
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| need hel[p on a math problem? please show me the steps to so;ve systems using sustitution i forgot... 3x + y =9 y= -5x + 9      |
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03-10-2008, 06:51 PM
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| 3x + y =9 y= -5x + 9 From the second equation, y = -5x + 9 Put this value for y into the first equation: 3x + (-5x + 9) = 9 -2x + 9 = 9 -2x = 0 x = 0 If x = 0, then y = -5x + 9 = 0 + 9 = 9 Your solution to this system of equations is (0,9) |
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