Subtract(-7-8)-(-5n+9)
To compute the expression Subtract(-7-8)-(-5n+9), we first need to simplify the terms inside the parentheses:
-7 - 8 = -15
Then, using the property that subtracting a negative is the same as adding a positive, we get:
-(-5n + 9) = 5n - 9
Now, we can subtract -15 from 5n - 9:
5n - 9 - (-15)
Using the same property as before, we can rewrite this expression as:
5n - 9 + 15
Finally, combining like terms, we calculate:
5n + 6
So, Subtract(-7-8)-(-5n+9) simplifies to 5n + 6.