document.write( "Question 593151: 8X+13Y=271.80 10X+15Y=321.00 use theinverse of the coefficient matrix of the equivalent matrix equation to solve
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Algebra.Com's Answer #376220 by stanbon(75887)\"\" \"About 
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8X+13Y=271.80
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\n" ); document.write( "I used the matrix function on a TI-84 to get:
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