Résoudre les équations suivantes : aidez moi.

a)
3t+5=2t-4
3t-2t=-4-5
t=-9

b)
11z-6=3z+7
11z-3z=7+6
8z=13
z=13/8

a) 
3t + 5 = 2t - 4
3t - 2t = - 4 - 5
t = - 9

b)
11z - 6 = 3z + 7
11z - 3z = 7 + 6
8z = 13
z = 13/8
z = 1,625

a)
3 (x + 4) = 2x - 5
3x + 12 = 2x - 5
3x - 2x = - 5 - 12
x = - 17

b)
6 (x - 1) = 7x + 3
6x - 6 = 7x + 3
6x - 7x = 3 + 6
- x = 9
x = - 9

a)
1/2x + 1/4 = 1/8x + 5/8
4/8x + 2/8 = 1/8x + 5/8
4/8x - 1/8x = 5/8 - 2/8
3/8x = 3/8
x = 1