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by arya6000
Wed Feb 27, 2013 11:41 pm
Forum: Advanced Algebra ("pre-calculus")
Topic: why a number does not become negative when it's moved
Replies: 2
Views: 2070

why a number does not become negative when it's moved

Hello I'm very confused as to why 2 numbers don't become negative when it's moved to the other side of the equal sign. This is from a learning video that I'm watching and I have circles the part that is confusing in red. If you can clarify this I'd highly appreciate it. Here is the link to the pictu...

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