5 2 x 4 )=- 3 x 6 )- 5
- 5 6 x 2 1 4 x 3 5
- 9 (- 2x 5 )=- 5 2 3 x )+ 4 6 x
- X 5 5x 4 6x 3 x 2 5x 6
- X 2 3 3 2x 1 )/ 4 5x 3 6 x 5 12
- 3 4 x 5 )+ 15 50 2x 2 =- 7 6 x 5
- 2 x 4 x 5 )( 3x 5 6 13x 1 9 )= 0
- X 11 4 5 x 2 )/ 3 x 5 /- 6
- 5 8 x 4 7 x 3 6 x 2 5
- 2 5 x 3 4 6 15 chia 4 9 x 5
- 2 5 6 x 5 1 4 x 3 1 12
- 5 x 4 )/ 3 2 5x 3 )/ 5 6 x 4 )/ 7