Bonsoir qui pourrait m'aider svp ??? Question / 1) a et b Question / 2 )

bonsoir Programme 1 x 3 x 3 x + 11 Programme 2 x x - 7 5 x - 35 a) 3 x + 11 = 50 3 x = 50 - 11 3 x = 39 x = 13 b) 5 x - 25 = 60 5 x = 60 + 25 5 x = 85 x = 17