Question

Pls help me! 19 and 20.

Answer 1

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) )`