document.write( "Question 773479: Solve the system by substitution.
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Algebra.Com's Answer #471600 by ramkikk66(644)\"\" \"About 
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document.write( "x + 3y = –4\r\n" );
document.write( "2x + 2y = –8\r\n" );
document.write( "From the 1st eqn, x = -4 -3*y\r\n" );
document.write( "Substituting for x in the second equation\r\n" );
document.write( "\"2%2A%28-4+-+3%2Ay%29+%2B+2%2Ay+=+-8\"\r\n" );
document.write( "\"-8+-6%2Ay+%2B+2%2Ay+=+-8\"\r\n" );
document.write( "\"-4%2Ay+=+0\"\r\n" );
document.write( "\"y+=+0\"\r\n" );
document.write( "\"x+=+-4+-+3%2Ay+=+-4\"\r\n" );
document.write( "Solution is \"x+=+-4\" and \"y+=+0\"\r\n" );
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