For a property with such a long name, it's really a simple math law. The multiplicative identity property states that any time you multiply a number by 1, the result, or product, is that original number. To write out this property using variables, we can say that n * 1 = n.
Answer:
1. 
2. 
3. 
Step-by-step explanation:
1. 
I like to make it an improper fraction first.

Now take the LCM. The LCM is 20.

Now add them.

Make this into a mixed number.

That's your answer for number 1.
2. 
Do the same thing as the previous addition problem but subtract instead.



is your answer for number 2.
3. 



is your answer for number 3.
I hope this helps! Let me know if you need help or if I got anything wrong :)
Answer:
I believe the answer is 14:)
So on the first one, check the first picture, solve for "x" and "y" respectively
on the second one, check the second picture, the left-half, solve for "x"
on the last one, are they similar? check the second picture, right-half
Answer
1260
A baseball team sells tickets for two games.
The ratio of sold tickets to unsold tickets for the first game was 7 : 3. For the second game, the ratio was 13 : 2. There were 240 unsold tickets for the second game. How many tickets were sold for the first game?