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/sci/ - Science & Math

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>> No.8774099 [View]
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8774099

>>8774057

[math]\frac{-3x+9}{-2x+7} = \frac{(-1)(3x-9)}{(-1)(2x-7)} = \frac{3x-9}{2x-7} = \frac{3(x-3)}{2x-7}[/math]

[math]\frac{-1}{-1} = 1[/math]

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