5*(x-4.1) = 2.5(x+0.8)

Expand both sides:

5x - 20.5 = 2.5x + 2

Now, combine like terms:

5x - 2.5x = 2 + 20.5
2.5x = 22.5

Now solve for x:

x = 22.5 / 2.5
x = 9

Therefore, the solution is x = 9.