0.8*(4.7y-0.38) + 40.04 = 45

First, distribute the 0.8:

3.76y - 0.304 + 40.04 = 45

Combine like terms:

3.76y + 39.736 = 45

Subtract 39.736 from both sides:

3.76y = 5.264

Now, divide by 3.76 to solve for y:

y = 5.264 / 3.76
y ≈ 1.4

Therefore, the value of y is approximately 1.4.