Bonjour, j'ai besoin d'aide pour résoudre ces 4 équations. Merci :)
a) 5 (x – 3) = 2x – 4
b) -3x = 2x + 5
c) -9x + 15 = 5x – 8
d) 1/2a = -7
a) 5 (x – 3) = 2x – 4
b) -3x = 2x + 5
c) -9x + 15 = 5x – 8
d) 1/2a = -7
More Questions From This User See All
Lista de comentários
Verified answer
Bonjour,a) 5 (x – 3) = 2x – 4
5x-15 =2x-4
5x-2x =-4+15
3x = 11
x =11/3
b) -3x = 2x + 5
-3x-2x = 5
-5x= 5
x= -1
c) -9x + 15 = 5x – 8
tu fais,
d) 1/2a = -7
a/2 = -7
a =-7*2 = -14
Verified answer
Bonjour :A)5 (x-3)=2x-4
A)5x-15=2x-4
A)5x-2x=-4+15
A)3x=11
A)x=11/3
B)-3x=2x+5
B)-3x-2x=5
B)-5x=5
B)x=-1
C)-9x+15=5x-8
C)-9x-5x=-8-15
C)-14x=-23
C)x=23/14
Et tu fais d, bonne journée.