Réponse :
Bonsoir!
a) 7(x+3) = 7x+21
b) 6(3-x) = 18-6x
c) 5(2x+1) = 10x+5
d) 4(x-4) = 4x-16
Bonsoir,
a= 7x+21
b= 9-6x
c= 10x +5
d= 4x -16