Answer:
[tex]12+17+y+z[/tex] or [tex]29+y+z[/tex].
Step-by-step explanation:
We have been given that Nigel is planning his training schedule for a marathon over a 4-day period. He is uncertain how many miles he will run on two days. One expression for the total miles he will run is [tex]12+y+17+z[/tex].
The Commutative Property of Addition states that we can add numbers in any order. For example a and b be two numbers.
According to Commutative Property of Addition [tex]a+b=b+a[/tex].
Similarly, we can write an equivalent expression to our given expression as:
[tex]12+17+y+z[/tex]
We can simplify our expression as:
[tex]29+y+z[/tex].
Therefore, our required expression would be [tex]12+17+y+z[/tex] or [tex]29+y+z[/tex].
