bonjour
A = 7 ⁵ * 7 ³
A = 7 ⁸
B = 7 * 7 ⁶ * 7
B = 7 ⁸
C = 7 ⁴ * 7 ²
C = 7 ⁶
d = 7 ³ * 7 * 7 ² * 7²
d = 7 ⁸