0.3у + 1.1 - 0.5у - 1 = 5.6 - у

Combining like terms, we get:

-0.2у + 0.1 = 5.6 - у

Adding 0.2у to both sides:

0.1 = 5.6 - 0.8у

Subtracting 5.6 from both sides:

-5.5 = -0.8у

Dividing by -0.8:

у = 6.875

Therefore, у = 6.875.