Answer:
Don't subtract exactly or it will be incorrect, you'll have to add the years, and differentiate the leap years
Step-by-step explanation:
30 yrs old
sorry I dont have a shorter method
Are you asking like thousands or something else?
Answer:
-7 x -5 = 35
Step-by-step explanation:
When you multiply two numbers with the same sign they will always equal positive.
Hope this helped :)
Step-by-step explanation:

You need to add a -1
We can find this by setting up the equation like so
x + (-6) + 12 + 15 / 4 = 5
x + 21 = 20
x = 20 -21
x = -1
Now if we insert -1 where x is located in the equation, you will get a means of 5