document.write( "Question 997254: (x+y)-(y+z)-(z+x) \n" ); document.write( "

Algebra.Com's Answer #617695 by sciwiz55(1) $\"\"$ $\"About$

You can put this solution on YOUR website!
Take you problem and break it down into its parts first.
\n" ); document.write( "(x+y) becomes x+y.
\n" ); document.write( "-(y+z) becomes -y-z because you need to distrubute the -1 and a negative plus a positive equals a negative.
\n" ); document.write( "-(z+x) becomes -z-x because you have to distribute like before.
\n" ); document.write( "Now write out what you now have which is x+y-y-z-z-x.
\n" ); document.write( "Now cross out the parts that cancel each other out

. So x and -x cross each other out and y and -y cancel each other out. Leaving you with -z-z.
\n" ); document.write( "Now all you need to do is simplify the like terms giving you -2z\r
\n" ); document.write( "\n" ); document.write( "All in all (x+y)-(y+z)-(z+x) can be simplifed to -2z.\r
\n" ); document.write( "\n" ); document.write( "I hope this helped you to understand how to do this type of problem in the future. You could also go to www.wolframalpha.com for math help to check your answers. \n" ); document.write( "

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