2x 7 3 x 1 2
- 7 2x 3 7x 1 3x 2 4
- 2x 7 3x 1 )= 26
- 2x 1 3 x 7 2 5
- 2x 7 6 7x 2 3 3 1 x 2
- 7 2x 4 1 x 2 3
- 2x 3 )( 2x 7 )( x 1
- X 2x 3 )+ 7 2x 1 )- 5
- 8 2x 3 )+ 7 4 2 x )- 1
- X 7 2x 3x 1 2x 3
- 3 x 5 )- 7 2x 1 )=- 9x 20
- 7 x 2 2x 3 1 x 2 5x 6
- 3 2x 2 3 )- 7 x 1 )= 0
- 2x 7 3 1 x 2 9
- 2x 7 (- 3 x 2 1 9 )( 3x 5 18
- 3x 7 3 x 1 )= 2 2x 6