document.write( "Question 628773: y=9mx-4b; solve for b \n" ); document.write( "
Algebra.Com's Answer #395825 by Tatiana_Stebko(1539)\"\" \"About 
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\"y=9mx-4b\"
\n" ); document.write( "\"y%2B4b=9mx\"
\n" ); document.write( "\"4b=9mx-y\" divide by 4
\n" ); document.write( "\"b=%289mx-y%29%2F4\"
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