Sagot :
Bonjour
a) - t - 4 = 8 + 7 t
- t - 7 t = 8 + 4
- 8 t = 12
t = - 12/8 = - 1.5
b) 13 x + 11 = 8 x + 28
13 x - 8 x = 28 - 11
5 x = 17
x = 17/5
c) 5 x = 0
x = 0
d) 7y + 22 = 14 - 4y
7y + 4y = 14 - 22
11y = -8
y = -8/11
Bonjour
a) - t - 4 = 8 + 7 t
- t - 7 t = 8 + 4
- 8 t = 12
t = - 12/8 = - 1.5
b) 13 x + 11 = 8 x + 28
13 x - 8 x = 28 - 11
5 x = 17
x = 17/5
c) 5 x = 0
x = 0
d) 7y + 22 = 14 - 4y
7y + 4y = 14 - 22
11y = -8
y = -8/11