document.write( "Question 945636: If the ratio of a to b is 4 to 5, find the value of the expression 2a+3b/4b-3a. Express your answer as a common or improper fraction reduced to lowest terms. Thanks for your help. \n" ); document.write( "
Algebra.Com's Answer #576792 by MathLover1(20849)\"\" \"About 
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\n" ); document.write( "If the ratio of \"a\" to \"b\" is \"4\" to \"5\", then we have \r
\n" ); document.write( "\n" ); document.write( "\"a%2Fb=4%2F5+\"=>solve for \"a\"\r
\n" ); document.write( "\n" ); document.write( " \"a=%284%2F5+%29b\"
\n" ); document.write( "\"a=4b%2F5\"\r
\n" ); document.write( "\n" ); document.write( "to find the value of the expression \r
\n" ); document.write( "\n" ); document.write( "\"%282a%2B3b%29%2F%284b-3a%29\" substitute \"4b%2F5\" for \"a\"\r
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\n" ); document.write( "\n" ); document.write( "=\"%282%284b%2F5%29%2B3b%29%2F%284b-3%284b%2F5%29%29\"\r
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\n" ); document.write( "\n" ); document.write( "=\"%288b%2F5%2B3b%29%2F%284b-12b%2F5%29\"\r
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\n" ); document.write( "\n" ); document.write( "=\"%288b%2F5%2B15b%2F5%29%2F%2820b%2F5-12b%2F5%29\"\r
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\n" ); document.write( "\n" ); document.write( "=\"%2823cross%28b%29%2Fcross%285%29%29%2F%288cross%28b%29%2Fcross%285%29%29\"\r
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\n" ); document.write( "\n" ); document.write( "=\"23%2F8\"
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