Math 20 - Please show work to help!

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Mathematics

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(x² - 7x + 12)/(x² + 4x + 3) =1 - (x - 4)/(x² + 4x + 3)

so :

(x² - 7x + 12)/(x² + 4x + 3) =(x² + 4x + 3)/(x² + 4x + 3) - (x - 4)/(x² + 4x + 3)

so :

(x² - 7x + 12)/(x² + 4x + 3) =((x² + 4x + 3) - (x - 4))/(x² + 4x + 3)

so:

(x² - 7x + 12)/(x² + 4x + 3) =((x² + 3x - 1))/(x² + 4x + 3)

so:

(x² - 7x + 12) =(x² + 3x - 1)

so:

 - 7x + 12 - 3x + 1 = 0

so :

 - 10x + 13 = 0

so ;

 x = 13/10

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