BLACKBEARD
Answered

Bonjour,

Résoudre les équations suivantes :
- x - (-8) = -8
x - (-7) = - 9 + 6 + x
- x - 2x + 3 = 3 - x

Merci.

Sagot :

Réponse :

Explications étape par étape

Bjr,

- x - (-8) = -8

-x+8 = -8

-x = -8-8

-x = -16

x=16

x - (-7) = - 9 + 6 + x

x+7 = -3+x

x-x = -3-7

0 = -10 ??

Impossible

- x - 2x + 3 = 3 - x

x-2x+x = 3-3

0 = 0

☺

Hello,

- x + 8 = -8

- x = - 8 - 8

- x = -16

x = 16

x + 7 = -3 + x

x - x = - 3 - 7

0 = -10

- 3x + 3 = 3 - x

- 3x + x = 3 - 3

-2x = 0

x = 0/-2 = 0