Equivalent equations and inequalities

Summary

  • a=ba=b a+c=b+ca+c=b+c
  • a=ba=b ac=bcac=bc
  • a=ba=b ac=bcac=bc ( c0c0 )
  • a=ba=b a/c=b/ca/c=b/c ( c0c0 )
  • abab a+cb+ca+cb+c
  • abab acbcacbc ( c>0c>0 )
  • abab acbcacbc ( c<0c<0 )