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Pls help me! 19 and 20.

Pls help me! 19 and 20.-example-1

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Answer:

See below ↓

Explanation:

19.


  • (x-1)/(2) - (x-3)/(5) - (x-7)/(10) + (x-2)/(5)

  • (5(x-1)-2(x-3)-(x-7)+2(x-2))/(10)

  • (5x-5-2x+6-x+7+2x-4)/(10)

  • (4x+4)/(10)

  • (2x+2)/(5)

20.


  • (2x+3)/(2x) + (x+3)/(4x) - (18x+6)/(8x^(2) )

  • (4x(2x+3)+2x(x+3)-(18x+6))/(8x^(2) )

  • (8x^(2) +12x+2x^(2) +6x-18x-6)/(8x^(2) )

  • (10x^(2)-6)/(8x^(2) )

  • (5x^(2)-3)/(4x^(2) )
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