Bonjour
A = ((3 x 7) + (7 x 8))
A = 3 x 7 + 7 x 8
A = 21 + 56
A = 77
B = (5 + 4) x (5 x 4)
B = 5 + 4 x 5 x 4
B = 5 + 20 x 4
B = 5 + 80
B = 85
C = [4 x (5 x (7 x (8 + 10)))]
C = [4 x (5 x (7 x 18))]
C = [4 x (5 x 126)]
C = 4 x 630
C = 2 520
D = (48 : (24 : 3) + (7 + 5) : 2)
D = (48 : 8) + 2 : 2)
D = 6 + 1
D= 7.
