Not really sure if the $35,000 is the total or not but..
If the $35,000 dollars is the total then here you go.
Take the $35,000 dollars and subtract the 10% sales tax.
35,000 - 3,500 = 31,500
Then take the total before tax and subtract the shipping charges.
31,500 - 940 = 30,560
Finally, subtract the cost of installation.
30,560 - 1,120 = 29,440
Andy's Candy spent $29,440 on equipment before taxes.