Respuesta :
We can use the concept of commutative property of addition here. We know that the addition follow the commutative property.
The commutative property of addition is given by
[tex]a+b=b+a[/tex]
It means, if we change the order, it will not affect the result.
Therefore, using above mentioned property, we can see that
1+7 = 7+1
Hence, if we know the value of 1+7, then we can easily find the value of 7+1 because both are same.