document.write( "Question 388145: please can you help me with this problem using elinmation 4y+4=7x
\n" ); document.write( " 36-4y=3x
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Algebra.Com's Answer #274467 by avani(25)\"\" \"About 
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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
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\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
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