1 2 x 7 2x 5
- 1 2 x 5 )+ 1 8x 7 2x
- 3x 1 2 x 7 2 2 2x 5 2x 5
- 3 x 1 )( x 7 )-( 2x 5 2
- 2x 1 )( x 2 5x 7
- 2x 1 3 5 3x 2 x 7 4
- X 7 2x 1 )= 2 6 5x )- 13
- 1 2 x 4 5 2x 7
- 5x 2x 9 1 2 x 7
- 5 2x − 1 2 x 7 6
- 2 x 7 )( 3 2x )+( 5x 2 )( 4x 1
- B 3x 1 2 x 7 2 2 2x 5 2x 5
- X 1 2 x 2 3 2x 5 7 9
- 1 2x 5 7 9 2 x 5
- 5 2x 1 )- 2 x 2 )= 7 4x
- 2x 1 3 5x 2 7 x 13