document.write( "Question 1018552: solve by any method\r
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document.write( "9x=-22+7y
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document.write( "-4x+2y=2 \n" );
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Algebra.Com's Answer #634636 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! 9x=-22+7y \n" ); document.write( "-4x+2y=2 \n" ); document.write( "-------------- \n" ); document.write( "9x-7y= -22 \n" ); document.write( "-4x+2y=2 \n" ); document.write( "------------ \n" ); document.write( "18x-14y= -44 \n" ); document.write( "-28x+14y=14; multiplying the top by 2 and the bottom by 7. \n" ); document.write( "-10x=-30, adding the two. \n" ); document.write( "x=3 \n" ); document.write( "substitute into either, I will use the second \n" ); document.write( "-12+2y=2 \n" ); document.write( "2y=14 \n" ); document.write( "y=7 \n" ); document.write( "(3,7) \n" ); document.write( "Check using first \n" ); document.write( "27=-22+49\r \n" ); document.write( "\n" ); document.write( "x=3 \n" ); document.write( " |