To solve this, we first need to simplify the expression inside the parentheses:

(4,2y - 3,96) * 1,5 = 8,55

Multiply each term inside the parentheses by 1.5:

(4,2y 1,5) - (3,96 1,5) = 8.55

6.3y - 5.94 = 8.55

Now, to solve for y, we will isolate the y term:

6.3y = 14.49

Divide both sides by 6.3:

y = 2.3

Therefore, the value of y that satisfies the equation is y = 2.3.