document.write( "Question 86979: Tutor could you please help me with this problem, my practice worksheet asked me to \"perform the indicated operation\"????\r
\n" ); document.write( "\n" ); document.write( "thank you\r
\n" ); document.write( "\n" ); document.write( "3/2b minus 5/3b^3\r
\n" ); document.write( "\n" ); document.write( "Also what is the LCD for 7over a^2+2a-63*8 over a+9 \n" ); document.write( "
Algebra.Com's Answer #62939 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
3/2b minus 5/3b^3
\n" ); document.write( "(3/2b) - (5/3b^3)
\n" ); document.write( "The least common denominator is 6b^3
\n" ); document.write( "Rewrite each fraction with the lcm as its denominator.
\n" ); document.write( "= 9b^2/lcd - 10/lcd
\n" ); document.write( "Since the denominators are the same you can combine the numerators to get:
\n" ); document.write( "= [9b^2-10]/lcd
\n" ); document.write( "= [9b^2-10]/6b^3
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\n" ); document.write( "Also what is the LCD for 7over a^2+2a-63*8 over a+9
\n" ); document.write( "[7/(a^2+2a-63)] * [8/(a+9)]\r
\n" ); document.write( "\n" ); document.write( "= [7/(a+9)(a-7)] * [8/(a+9)]\r
\n" ); document.write( "\n" ); document.write( "= [7/(a-7)] * [8/1]\r
\n" ); document.write( "\n" ); document.write( "= 56/(a-7)\r
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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