document.write( "Question 478339: I'm having alot of trouble understanding the process of solving a system of equations by subsitution vs elimination. \r \n" );
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document.write( "Solve the system of equations by substitution. \n" );
document.write( "2x + y = 9 \n" );
document.write( "x − 4y = 9\r \n" );
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document.write( "and \r \n" );
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document.write( "Solve the system of equations by elimination. \n" );
document.write( "49x − 27y + 47 = 0 \n" );
document.write( "14x − 45y + 30 = 0\r \n" );
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document.write( "? I would so appreciate a detailed explanation of both processes. \n" );
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