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a) 2x + 11 =5 b) 2x +8 = -11 et c) 5x + 17 = 7
Svp a faire de préférence pour ce soir
Merci d'avance

Sagot :

LILAFRN
Bonjour !

a) 2x + 11 = 5
2x = 5-11
2x = -6
tu divises les deux par 2
x = -3

b) 2x + 8 = -11
2x = -11 - 8
2x = -19
x = -19/2

c) 5x + 17 = 7
5x = 7 - 17
5x = -10
x = -2
MARGESIMPSON1

Bonjour,

Résoudre :

A. 2x + 11 = 5

A. 2x + 11 - 11 = 5 - 11

A. 2x = 5 - 11

A. 2x = -6

A. 2x/2 = -6/2

A. x = -3 ✅️

B. 2x + 8 = -11

B. 2x + 8 - 8 = -11 - 8

B. 2x = -11 - 8

B. 2x = -19

B. 2x/2 = -19/2

B. x = -19/2 ✅️

C. 5x + 17 = 7

C. 5x + 17 - 17 = 7 - 17

C. 5x = 7 - 17

C. 5x = -10

C. 5x/5 = -10/5

C. x = -2 ✅️

/ = fraction

Bonne journée.