EVEHANNAHGUERARD15
Answered

svp la miffr EXERCICE 2 Développer et réduire les expressions suivantes :
A=7-(3-7x)
B = 7-(-3-7x)
C = 7+(-3+7x)
D = 6(-4x - 5) +7
E= -5(6 - 4x) - 5x​

Sagot :

KATYRAMA199620

Réponse:

[tex]a =7 - (3 - 7x) =7 - 3 + 7x = 4 + 7x \\b =7 - ( - 3 - 7x) =7 + 3 + 7x =10 + 7x \\c = 7 + ( - 3 + 7x) = 7 - 3 + 7x = 4 + 7x \\d =6( - 4x - 5) + 7 = - 24x - 30 + 7 = - 24x - 23 \\e = - 5(6 - 4x) - 5x = - 30 + 20x - 5x = - 30 + 15x = 5(3x - 6)[/tex]