Bonjour pouvez vous m’aider? Merci

Bonsoir,

a. 4x + 7x = 11x

b. 5x - 3x = 2x

c. 11x - 25x = - 14x

d. 3/4x + 7/4x = 10/4x = 5/2x

e. - 7/3x + 2/9x = - 21/9x + 2/9x = - 19/9x

f. 4/9x - 2/5x = 20/45x - 18/45x = 2/45x

g. 7 + 3x - 5 = 3x + 2

h. 2x + 8 + 3x = 5x + 8

i. 4x² + 6x - 2 + 5x + 2x² = 6x² + 11x - 2.