bonjour
a) 2 x a + 5 x c = 2 a + 5 c
b) a x d + 5 x 8 = ad + 40
c) 38 x ( 3 +2 x c) = 38 * ( 3 + 2 c ) = 114 + 76 c
d) 3 x z -0 x b = 3z
e) 3 x 7 - d x b = 21 - db
f) a x ( 3x 9+ b x n) = 3 ax + 9 a + abn
g) 0 x u + 1 x m = m
h) a x 6 x n + 3x p = 6an + 3 p
i) 9 x m x 5 + k x j x 8 = 45 m + 8 kxj
