Aider moi s’il vous plaît

Réponse:

a) 4x - 16=0

4x= 16

x=4

》-4 Is not the solution of this equation

b) 24-(5+a)= -8a-3

24-5-a= -8a - 3

19-a= -8a-3

-a+8a= -3-19

7a=22

a=22/7

》-4 is not the solution of this equation

c) 5(2+t) + 4= -6

10 + 5t + 4= -6

5t= -6-14

5t= -20

t= -4

》-4 Is the solution of this equation

d) 7x^2-2x-4=x (7x-1)

7x^2-2x-4=7x^2-x

-2x+x-4=0

-x=4

x= -4

》-4 Is the solution of thIs equation