document.write( "Question 168145: xy-7x+3y-21 \n" ); document.write( "

Algebra.Com's Answer #123912 by nerdybill(7384) $\"\"$ $\"About$

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xy-7x+3y-21
\n" ); document.write( "Group terms:
\n" ); document.write( " (xy-7x)+(3y-21)
\n" ); document.write( "Factor each sub-group:
\n" ); document.write( " x(y-7)+3(y-7)
\n" ); document.write( "Factor out (y-7):
\n" ); document.write( " (y-7)(x+3)
\n" ); document.write( " \n" ); document.write( "

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