👤

Sagot :

AYUDA

2*4x + 2*(-5) = 7x - 5

8x - 10 = 7x - 5

8x - 7x - 10 + 10 = 7x - 7x - 5 + 10

x = 5

vérif

2 (4*5 - 5) = 2*15 = 30

et

7*5 - 5 = 35 - 5 = 30

Bonjour,

[tex]2(4x - 5) = 7x - 5[/tex]

[tex]8x - 10 = 7x - 5[/tex]

[tex]8x - 7x = - 5 + 10[/tex]

[tex]\boxed{x = 5}[/tex]

Vérification :

[tex]\boxed{2(4 \times 5 - 5) = 2 \times (20 - 5) = 2 \times 15 = 30}[/tex]

[tex]\boxed{7 \times 5 - 5 = 35 - 5 = 30}[/tex]

Tout est bon

© 2024 IDNLearn. All rights reserved.