Please help me with my steps. Thanks

3.2

Step-by-step explanation:

Each box that is fully shaded represents the number 1.The box next to it represents the number after the decimal point. So the first box equals 1.7 and the second box equals 1.5. Since it is asking the sum, we know that they are telling us to add. So if you add 1.7 and 1.5 you get 1.12. However since a full shaded box is 10, you turn the 2 into a 3 and keep the remainder after the decimal point, resulting in 3.2.