document.write( "Question 921476: X=2y-5 and Y=3x-5 then X+Y=? \n" ); document.write( "
Algebra.Com's Answer #559007 by mathsnight(4)\"\" \"About 
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Substitute the given values simply:
\n" ); document.write( "x=2(3x-5)-5
\n" ); document.write( "=> x=3; for y,
\n" ); document.write( "y=3x-5=3(3)-5=4.
\n" ); document.write( "Then x+y=3+4=7.
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