Bonjour pouvez vous m'aider s'il vous plaît ​

a) x + 5 = 4
x = 4 - 5
x = -1

b) 2x = 3
2/2x = 3/2
x = 1,5

c) 4x - 12 = 0
4x = 0 + 12
4x = 12
4/4x = 12/4
x = 3

d) 5x - 19 = 24x - (3x + 13)
5x - 19 = 24x - 3x - 13
5x - 24x + 3x = -13 + 19
-16x = 6
-16/-16x = 6/-16
x = -0,375

e) 5x + 1 = 2x + 19
5x - 2x = 19 - 1
3x = 18
3/3x = 18/3
x = 6

f)5 + 4h = 0
4h = 0 - 5
4h = -5
4/4h = -5/4
h = -1,25

g)(5x - 3)(6 + x) = 0
5x - 3 + 6 + x = 0
6x = 0 + 3 - 6
6x = -3
6/6x = -3/6
x = -0,5

h)2 - 3t = 0
3t = -2
3/3t = -2/3
t = -2/3