document.write( "Question 841554: The sum of the numbers X and Y is 320. X is 80 more than Z but 60 less than Y. \n" ); document.write( "
Algebra.Com's Answer #506986 by ptaylor(2198)\"\" \"About 
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X+Y=320----eq1
\n" ); document.write( "X-80=Z-----eq2
\n" ); document.write( "X+60=Y----eq3\r
\n" ); document.write( "\n" ); document.write( "Substitute Y=X+60 from eq3 into eq1 and we get
\n" ); document.write( "X+X+60=320 collect like terms
\n" ); document.write( "2X=320-60=260
\n" ); document.write( "X=130---Substitute X=130 into eq3
\n" ); document.write( "130+60=Y
\n" ); document.write( "Y=190
\n" ); document.write( "Substitute X=130 into eq2
\n" ); document.write( "130-80=Z
\n" ); document.write( "Z=50\r
\n" ); document.write( "\n" ); document.write( "CK
\n" ); document.write( "X+Y=320
\n" ); document.write( "130+190=320
\n" ); document.write( "320=320
\n" ); document.write( "X-80=Z
\n" ); document.write( "130-80=50
\n" ); document.write( "50=50
\n" ); document.write( "X+60=Y
\n" ); document.write( "130+60=190
\n" ); document.write( "190=190\r
\n" ); document.write( "\n" ); document.write( "Hope this helps---ptaylor\r
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