3 x 1 5 x 7 3
- 3 2 1 x )= 5 7 x 3
- 2x 7 x 3 1 =- 5 x 3
- 21 1 3 x 5 x 7 1 3
- 3 5 x 1 1 6 x 3 7
- 3 5 x 4 7 x 1 3
- 3 x 1 )- 2 3x 1 )= 5 x 2 )+ 7
- 5 1 3 x 3 1 7 x 3 8
- 17 2 x 3 )+ 5 x 7 )- 3 2x 1 )=- 28
- X 1 9 x 3 7 x 5 5 x 7 3
- 7 9 2 3 x 1 9 x 5 3
- 3 1 5 x 2 5 8 x 1 3 7
- X 3 x 5 2x 7 3x 4 3 1 2
- 3x 1 5 x 7 3 solve and check
- 3x 1 5 x 7 3 solve the equation