aidez moi svp exo 10

A = 3x - 5 + 5 (2x - 2)
A = 3x - 5 + 10x - 10
A = 3x + 10x - 5 - 10
A = 13x - 15

B = 4y - 6 (3 - 2y) + 4 (y - 1)
B = 4y - 18 + 12y + 4y - 4
B = 4y + 4y + 12y - 18 - 4
B = 20y - 22

C = 5t² + 3 (2t - 3) - 2t (t - 5)
C = 5t² + 6t - 9 - 2t² - 10t
C = 5t² - 2t² + 6t - 10t - 9
C = 3t² - 4t - 9