Bonjour ! Pourriez vous m’aider pour un exercice de MATHS ! Merci d’avance

a) 10-6 = 4

4+(-5)= 4-5 = -1

-1-(-3)= -1+3 = 2

b) -2-6 = -8

-8+(-5) = -8-5 = -13

-13-(-3) = -13+3 = -10

c) 5-6= -1

-1+(-5) = -1-5 = -6

-6-(-3) = -6+3 = -3

d) 8-6 = 2

2+(-5) = 2-5 = -3

-3-(-3) = -3+3 = 0