Lawrence Perez, from Saddleback College, and his assistant Charlie, give this pre-algebra lesson on adding negative numbers together. You'll learn the easiest way to do it, and maybe even freshen up on your subtracting skills. Don't waste your time in summer school, learn it here.
This video is interpreted using American Sign Language by Jim Brewington.
Just updated your iPhone to iOS 18? You'll find a ton of hot new features for some of your most-used Apple apps. Dive in and see for yourself:
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Make a Fake, Pirate-Worthy Gold Bar on the Cheap
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There's Metal Hiding in Your Pepto-Bismol and Here's How You Extract It
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This Thermal Lance Fueled by Bacon (Yes, Bacon) Can Cut Right Through a Steel Pan
U-Lock Gets Hammered:
Is Compressed Air a Bike Thief's New Best Friend?
How To:
Make Dry Ice at Home Using a CO2 Fire Extinguisher
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Hand Fully Submerged in Liquid Nitrogen (OUCH... Right?)
How To:
Generate Professional Drawings in Seconds Using Image Wand on iOS 18.2 or iPadOS 18.2
How To:
Use the Crayola Cutter for arts and crafts projects
How To:
Create an Admin User Account Using CMD Prompt (Windows)
How To:
See Passwords for Wi-Fi Networks You've Connected Your Android Device To
How To:
Use Genmoji to Create Custom Emoji That Work Just Like Regular Emoji in Messages, Notes, and More
How To:
Remove Unwanted Objects, People, and Distractions in Photos on Your iPhone, iPad, or Mac
How To:
Safari's New Summary Feature Boils Webpages Down to Key Highlights for You — Here's How It Works
How To:
Scan for Vulnerabilities on Any Website Using Nikto
How To:
Clone Any Android App on Your Samsung Galaxy Phone Without Using Any Third-Party Tools
How To:
Crack Password-Protected Microsoft Office Files, Including Word Docs & Excel Spreadsheets
How To:
Add Descriptions to WhatsApp Group Chats to Coordinate Discussions Better
How To:
Use FaceTime's Secret Hand Gestures and Reaction Buttons to Add Animated On-Screen Effects to Your Video Feed
How To:
16 Harry Potter Spells for Siri That Turn Your iPhone into a Magical Elder Wand
How To:
Generate Text, Images, and Insights with Apple Intelligence's Built-in ChatGPT Integration
How To:
Generate Professional Drawings in Seconds Using Image Wand on iOS 18.2 or iPadOS 18.2
How To:
Use the Crayola Cutter for arts and crafts projects
How To:
Create an Admin User Account Using CMD Prompt (Windows)
How To:
See Passwords for Wi-Fi Networks You've Connected Your Android Device To
How To:
Use Genmoji to Create Custom Emoji That Work Just Like Regular Emoji in Messages, Notes, and More
How To:
Remove Unwanted Objects, People, and Distractions in Photos on Your iPhone, iPad, or Mac
How To:
Safari's New Summary Feature Boils Webpages Down to Key Highlights for You — Here's How It Works
How To:
Scan for Vulnerabilities on Any Website Using Nikto
How To:
Clone Any Android App on Your Samsung Galaxy Phone Without Using Any Third-Party Tools
How To:
Crack Password-Protected Microsoft Office Files, Including Word Docs & Excel Spreadsheets
How To:
Add Descriptions to WhatsApp Group Chats to Coordinate Discussions Better
How To:
Use FaceTime's Secret Hand Gestures and Reaction Buttons to Add Animated On-Screen Effects to Your Video Feed
How To:
16 Harry Potter Spells for Siri That Turn Your iPhone into a Magical Elder Wand
How To:
Generate Text, Images, and Insights with Apple Intelligence's Built-in ChatGPT Integration
How To:
Dial These Secret Codes to See if Someone Is Hijacking Calls & Texts on Your iPhone
How To:
Use Burp & FoxyProxy to Easily Switch Between Proxy Settings
How To:
Apple's Messages App Has Some Cool New Text Editing Features and Effects for iMessage — Here's How It All Works
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Make Siri Say Whatever You Want Every Time You Connect Your iPhone to a Charger
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Open Your Car Door Without a Key: 6 Easy Ways to Get in When Locked Out
How To:
Generate random numbers (with decimals) in Excel
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