2x 3 x 1 4 7
- 2x 3 2 x 1 )= 4 x 1 )- 7
- 2x 1 x 4 3x 7
- 2x 1 )( 3x 4 )= 7
- 2x 3 x 1 6 7x 1 4 13 6
- 2x 3 7 12 x 4 1 5 4x 5 13
- 2x 3 5 x 3 4 4x 1 7
- 7x 4 2x 3 x 5 1
- 2x 3 x 1 6 7x 1 4 2 1 6
- 2x 3 2 x )- 1 3 7x 1 4
- 2x 1 3 5 3x 2 x 7 4
- 8 2x 3 )+ 7 4 2 x )- 1
- 2x 3 x 1 )+ 4 x 2 )= 74
- 2x 4 5 3 x 1 7 2
- 2x 2 3x 1 4 7
- 2x 1 3 x 4 5 7