The addition of facts which helps to solve the expression 16-9 is 7+9 and 9+7.
The fact family is the collection of facts of math using the same numbers. With 3 numbers in a fact family, we can form the total 4 math facts.
For example, let there is 3 numbers we have as, number 5, number 3 and number 8. Using these three number, the math fact can be made as,
[tex]5+3=8\\3+5=8\\8-5=3\\8-3=5[/tex]
This fact family and math facts used to understand the concept of addition and subtraction.
The expression given in the problem is 16-9. The result of this expression is,
[tex]16-9=7[/tex]
Thus, both the addition facts for the above expression are,
[tex]7+9=16\\9+7=16[/tex]
Hence, the addition of facts which helps to solve the expression 16-9 is 7+9 and 9+7.
Learn more about the fact family here:
https://brainly.com/question/1250189
