Sagot :
A=5x(a+9) = 5a+45
B=2x(a-4) = 2a - 8
C=3x(10+b) = 30 + 3b
D=5x(6-b)= 30 - 5b
E=(11+2c)x7 = 77 + 14c
N=(9-3c)x7= 63 - 21c
S=(d+8a)x8 = 8d + 64a
F=(2g-3c)x9 = 18g-27c
En espérant t'avoir aidé.
A = 5*(a+9)
= 5a + 45
B = 2*(a-4)
= 2a - 8
C= 3*(10+b)
= 30 + 3b
D= 5*(6-b)
= 30 - 5b
E = 7*(11+2c)
= 77 +14c
N = 7*(9-3c)
= 63 -21c
S = 8*(d+8a)
= 8d +64a
F= 9*(2g-3c)
= 18g -27c