To solve the equation, we can first simplify the left side:

6 1/3 - y + 2,1 = 6 1/3
6.33 - y + 2.1 = 6.33

Now, we can combine like terms:

8.43 - y = 6.33

Next, we isolate the variable y by subtracting 8.43 from both sides:

-y = -2.1

Finally, we solve for y by multiplying both sides by -1:

y = 2.1

Therefore, the solution to the equation is y = 2.1.