document.write( "Question 247145: what multiplier should be used for each of the following equations to eliminate one unknown by subtraction? 3x-y=7 ,2x+7y=42 \n" ); document.write( "
Algebra.Com's Answer #180334 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! 3x-y=7 multiply this equation by 7 & add. \n" ); document.write( "2x+7y=42 \n" ); document.write( "21x-7y=49 \n" ); document.write( "------------- \n" ); document.write( "23x=91 \n" ); document.write( " \n" ); document.write( " |