To solve the equations:

1) 3.5y + 0.8 = 5.5
Subtract 0.8 from both sides:
3.5y = 4.7
Divide by 3.5:
y = 4.7 / 3.5
y ≈ 1.34

2) y - $1.2y+0.8$ - 2.4
Combine like terms:
y - 1.2y - 0.8 - 2.4
-0.2y - 3.2

Therefore, the solutions are:
1) y ≈ 1.34
2) -0.2y - 3.2