2 x 3 )= 4 2x 7
- 2 x 3 4 2x 7 6
- 2 x 7 )- 3 2x 4 )=- 18
- X 2 )(- x 3 )+( 2x 4 )( 3x 7
- 2 3 2x 4 5 x 7 3x 1
- X 2 7 )( 2x 3 4 )= 0
- 2 7x )=( x 4 )( 2x 3
- X 4 2x 3 7x 2 8x 12
- X 4 2x 3 7x 2 8x 12 0
- X 3 2x 2 7x 4 0
- 2 3 4 x 2 )= 5 2x 1 2 7 4x
- 6 x 4 )+ 2 3 3 2x 7 )- 8
- X 4 2x 3 17x 2 18x 72
- 7 1 2 x )- 3 4 2x
- 3 x 4 )- 4 2x 7 )= 2 x 5
- X 3 4 2x 7 12 2