bonjour je voulais savoir si vous pouvier m'aider sil vous plait, jai des probleme pour mes exercice exercice1 a) X-3=-1 b) 2y=5 c)5X=2X+9 exercice2 a) 3(5-4X)

a) x - 3 = -1

x = -1 +3

x = 2

b) 2y = 5

y = 5/2

c) 5x= 2x + 9

5x - 2x= 9

3x = 9

x = 9/3

x = 3

Exercice 2

a) 3(5 - 4x)

= -12x + 15

b) -2 (3y - 8)

= -6y + 16

c) 4(a+4)

= 4a + 16

d) X=(3-X)

e) t (2t + 5)

= 2t^2 + 5t

f) 3y(y-2)

= 3y^2 - 6y

exercice3

a) 2x - 5 = 5x + 1

2x - 5x = 1 + 5

-3x = 6

x = - 2

b) 3 - 7x = 3x + 2

-7x - 3x = 2 -3

-10x = -1

x = 1/10