Mai poured `2.6` liters of water into a partially-filled pitcher. The pitcher now contains `10.4` liters. Mai wants to know how many liters of water were originally in the pitcher. Three of Maiās friends drew a diagram (shown) to represent the problem.
You said the solution to your equation `2.6+10.4=` was `13`.
Explain what the solution to the equation means within the context of the problem.
