To solve this equation, we need to combine like terms on both sides of the equation.

Starting with the left side:
3.8 - 1.5y + (4.5 - 0.8)
= 3.8 - 1.5y + 3.7
= 7.5 - 1.5y

Now, simplifying the right side:
2.4y + 3

Now, setting the two sides equal to each other:
7.5 - 1.5y = 2.4y + 3

Next, we can solve for y by isolating the variable y:
7.5 - 3 = 2.4y + 1.5y
4.5 = 3.9y
y = 4.5 / 3.9
y ≈ 1.1538

Therefore, the solution to the equation is y ≈ 1.1538.