1 7 2 5 x 4 2

- 1 2 7 9 x 4 2 5x
- 5 2 5 x 2 1 7 x 4 2 3
- 6 2 5 x 2 7 x 4 1 3
- 5 2x 1 )- 3 3x 2 )= 7 x 4
- 13x 5 x 2 )= 4 2x 1 )+ 7
- 2 5 x 3 7 2 5 x 4 7 1 10
- 1 7 2 5x 4 2 resposta
- C 1 7 2 5x 4 2
- 2 3x 5 x 4 7 1 2
- 1 2 x 4 5 2x 7
- 1 7 8 2 1 4 x 3 5 2
- 7 3x 2 )- 5 4x 3 4 x 2 )+ 1
- Y 1 2 x 5 3 7 4 1 2
- X 5 8x 3 1 7 5x 4 2x 2
- 1 4 5 x 2 2 7 x 10 9