I make bread, and this calculation is making my head spin (I’m not very clever obviously)

My bread recipe calls for 1.5 tbsp or sugar and 1.5 tsp of salt.

I’ve mixed together 10 tbs of sugar and 10 tsp of salt in a big pot.

1.5 teaspoons = 0.5 tablespoons

Therefore if I add 2 tablespoons of my sugar salt mixture then I’m getting the correct proportions.

However the bread I baked with the mixture tasted too salty.

Have I got the math correct?

Thanks