document.write( "Question 462179: Solve by substitution method\r
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document.write( "6x+5y=-2
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document.write( "x=12-7y\r
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document.write( "Can someone help me with this, thanks for your help \n" );
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Algebra.Com's Answer #316888 by algebrahouse.com(1659)![]() ![]() You can put this solution on YOUR website! 6x + 5y = -2 \n" ); document.write( "x = 12 - 7y\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "6(12 - 7y) + 5y = -2 {substituted 12 - 7y, in for x, into top equation} \n" ); document.write( "72 - 42y + 5y = -2 {used distributive property} \n" ); document.write( "-37y + 72 = -2 {combined like terms} \n" ); document.write( "-37y = -74 {subtracted 72 from both sides} \n" ); document.write( "y = 2 {divided both sides by -37}\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = 12 - 7y {bottom original equation} \n" ); document.write( "x = 12 - 7(2) {substituted 2, in for y, into 12 - 7y} \n" ); document.write( "x = 12 - 14 {multiplied -7 by 2} \n" ); document.write( "x = -2 {combined like terms}\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = -2 and y = 2 \n" ); document.write( "www.algebrahouse.com \n" ); document.write( " |