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Forum URL: http://www.cut-the-knot.org/cgi-bin/dcforum/forumctk.cgi
Forum Name: High school
Topic ID: 178
Message ID: 3
#3, RE: Where do I start?
Posted by sapforhire on Jun-05-02 at 09:10 AM
In response to message #0
Distributing and combining like terms gives you -3x-3=0.
Another way is to think about the (x+1) and realize that small equation appears in each part of the equation; therefore if x+1=0 then the whole equation equals 0