document.write( "Question 772542: Solve the system by addition.
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document.write( "x + 4y = 2
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document.write( "3x – 2y = –22
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Algebra.Com's Answer #470950 by Cromlix(4381)![]() ![]() You can put this solution on YOUR website! x + 4y = 2 \n" ); document.write( "3x - 2y = -22 \n" ); document.write( ".............. \n" ); document.write( "x + 4y = 2 \n" ); document.write( "x = 2 - 4y \n" ); document.write( "Substitute into \n" ); document.write( "3x - 2y = -22 \n" ); document.write( "3(2 - 4y) - 2y = -22 \n" ); document.write( "6 - 12y - 2y = -22 \n" ); document.write( "-14y = - 22 - 6 \n" ); document.write( "- 14y = -28 \n" ); document.write( " y = 2 \n" ); document.write( "Substitute y = 2 \n" ); document.write( "into: \n" ); document.write( "x + 4y = 2 \n" ); document.write( "x + 4(2) = 2 \n" ); document.write( "x = 2 - 8 \n" ); document.write( "x = -6 \n" ); document.write( "x = -6,y = 2 \n" ); document.write( "Hope this helps. \n" ); document.write( ":-) \n" ); document.write( " |