bonjour

- 0.6 - 5 = - 5.6

- 5.6 - 0.4 = - 6

- 8 +2 = - 6

- 6 * - 6 = 36

- 7 - ( - 3 ) = - 7 + 3 = - 4

- 4 * 0.8 = - 3.2

- 5.5 - 10.5 = - 20

- 3.2 : -20 = - 3.2 * 1/20 = - 3.2 / 20  = - 1.6/10