👤

Sagot :

Réponse:

bonjour,

Explications étape par étape:

a) 5x + 17 = 20

5x = 20 - 17

5x = 3

x = 3/5

b) 4x + 9 = 8x

4x - 8x = - 9

-4x = - 9

x = -9/-4

x = 9/4

© 2024 IDNLearn. All rights reserved.