document.write( "Question 1041946: Elimination -2X-3y=5 -5X+3y=-40 \n" ); document.write( "
Algebra.Com's Answer #656860 by Boreal(15235)\"\" \"About 
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-2X-3y=5
\n" ); document.write( "-5X+3y=-40
\n" ); document.write( "add them, and the ys disappear
\n" ); document.write( "-7x=-35
\n" ); document.write( "divide by -7 both sides
\n" ); document.write( "x=5
\n" ); document.write( "substitute into first equation to get y
\n" ); document.write( "(-2)(5)-3y=5
\n" ); document.write( "-10-3y=5
\n" ); document.write( "-3y=15
\n" ); document.write( "y=-5
\n" ); document.write( "substitute into second equation to check
\n" ); document.write( "-5(5)+3(-5)=-40 checks
\n" ); document.write( "(5,-5) \n" ); document.write( "
\n" );