document.write( "Question 455163: Solving:\r
\n" ); document.write( "\n" ); document.write( " -2 x-3y = 14
\n" ); document.write( " 5 x-5y = 15 \r
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\n" ); document.write( "\n" ); document.write( "Using Substitution Method.
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Algebra.Com's Answer #312542 by siddhant(1)\"\" \"About 
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-2x=14+3y
\n" ); document.write( "x=-(14+3y)\2
\n" ); document.write( "therefore, substitute the value of x in equation 5x-5y=15
\n" ); document.write( "5(-14-3y)\2-5y=15
\n" ); document.write( "[(-70-15y)-10y]/2=15
\n" ); document.write( "(-25y-70)=30
\n" ); document.write( "y=-4
\n" ); document.write( "x=-1
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