document.write( "Question 388145: please can you help me with this problem using elinmation 4y+4=7x
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document.write( " 36-4y=3x
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Algebra.Com's Answer #274467 by avani(25)![]() ![]() ![]() You can put this solution on YOUR website! first rewrite the 2nd equation in standard form that is -4y-3x=-36 \n" ); document.write( "rewrite 1st equation in standard form that is 4y-7x=-4\r \n" ); document.write( "\n" ); document.write( "since now we have one 4y positive and one negative we can use addition to eliminate x \n" ); document.write( "4y-7x=-4 \n" ); document.write( "-4y-3x=-36 \n" ); document.write( "---------- \n" ); document.write( "0-10x=-40 \n" ); document.write( " x=-40/-10=4\r \n" ); document.write( "\n" ); document.write( "substitute x=4 in either of the equation to solve for y . i'm using 1 \n" ); document.write( "4y-7x=-4 \n" ); document.write( "4y-7(4)=-4 \n" ); document.write( "4y=-4+28 \n" ); document.write( "y=24/4=6\r \n" ); document.write( "\n" ); document.write( "thus x=4 and y=6 \n" ); document.write( " \n" ); document.write( " |