Jeu 1 :

Mes solutions :

786 = 8/8+5×(7+50×3)
786 = (7+(50+8/8)×5)×3
786 = (8+50×(7+8×5))/3
786 = (7−5)×(50×8−3)−8
786 = (8+5)×(50+8+3)−7
786 = (50×8−7)×(5−3)
786 = 50×(8+8)−7×(5−3)