Sagot :
bonjour
a. 5 +x=2
x = 2 - 5
x = - 3
b.y + 3 = 15
y = 15 - 3
y = 12
c. 5-X= 2
- x = 2 - 5
- x = - 3
x = 3
d. -X-4=8
- x = 8 + 4
- x = 12
x = - 12
e.n-6=-7
n = - 7 + 6
n = - 1
f.4=t-7
- t = - 7 - 4
- t = - 11
t = 11
g.X- 2/3= 6
x = 6 + 2/3
3 x /3 = 18/3 + 2 /3
3 x = 20
x = 20/3
h. V + 3/7 = 1/14
14 v /14 = 1/14- 6/14
14 v = - 5
v = - 5/14