Salut.
a + b + c + d = 36
c + d = 2 × (a + b)
b = a + 2
d = c + 2
a + b + 2 × (a + b) = 36
a + b + 2a + 2b = 36
3a + 3b = 36
a + b = 12
a + a + 2 = 12
2a = 10
a = 5
b = 5 + 2
b = 7
c + d = 2 × 12
c + d = 24
c + c + 2 = 24
2c + 2 = 24
2c = 22
c = 11
d = 11 + 2
d = 13
- Lumberjack25