The final addition equation is 1+(-5/8)=3/8.
Using the + and = signs, an addition equation displays the sum of two numbers.
The equals sign (=) indicates that the items to its left and right are equivalent.
The plus sign (+) indicates what should be added.
In the question, we are given that Kelly bought a cup of coffee and drank 5/8 of it.
We are asked to write an addition equation to represent how much coffee is remaining.
Kelly initially bought a cup of coffee, making 1 the initial quantity.
The amount of coffee drank = 5/8.
Thus, the remaining quantity of coffee can be shown as the difference between the initial quantity and the quantity of coffee he drank, that is,
Remaining coffee = 1-(5/8), which can also be shown as:
1+(-5/8), whose final value is 3/8.
Thus, the final addition equation is 1+(-5/8)=3/8.
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