document.write( "Question 125509: Solve the system by addition\r
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\n" ); document.write( "\n" ); document.write( "-5x+2y=10 x-3y=11
\n" ); document.write( "Solve by substitution
\n" ); document.write( "2x+2y=0 y=4x+0
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Algebra.Com's Answer #91945 by checkley71(8403)\"\" \"About 
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-5x+2y=10 now multiply the other equation by 5 & add.
\n" ); document.write( "5x-15y=55
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\n" ); document.write( "-13x=65
\n" ); document.write( "x=65/-13
\n" ); document.write( "x=-5 answer.
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\n" ); document.write( "y=4x+0 replace y in the other equation & solve for x.
\n" ); document.write( "2x+2(4x-0)=0
\n" ); document.write( "2x+8x-0=0
\n" ); document.write( "10x=0
\n" ); document.write( "x=0 answer.
\n" ); document.write( "y=4*0+0
\n" ); document.write( "y=0 answer.
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