do u still need the answer or no cuz its kinda long
You can perform all kind of operation that are one the inverse of the other, so that the value won't change. For example, you can multiply and divide by 2:

Or add and subtract 5:

Answer:
n>-13
Step-by-step explanation:
so you subtract 4 from -9 then since your not multiplying or divinding by a negative you don't flip the sign
$47.50
Step-by-step explanation:
Before tax proce is $72.29
sales tax is 9.5%= $6.87
$72.29+$6.87=$79.16
40% off of $79.16=$47.50