👤

Sagot :

Réponse :

a. 2(4x+8)+3=4+x

8x+16+3=4+x

8x+19=4+x

8x-x=4-16

7x=-12

x=-12/7

b. 2(x+8)+3=4-3x

2x+16+3=4-3x

2x+19=4-3x

2x+3x=4-19

5x=-15

x=-15/5=-3

c. 12x-1=2(5x-2)+1

12x-1=10x-4+1

12x-1=10x-3

12x-10x=-3+1

2x=-2

x=-1

Explications étape par étape

© 2024 IDNLearn. All rights reserved.