document.write( "Question 348932: -3/4 +2/5 \n" ); document.write( "
Algebra.Com's Answer #249426 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! -3/4 +2/5 \n" ); document.write( "------------- \n" ); document.write( "Find a common denominator. The product always works, even if it's not the LCD (Least Common Denominator). Schools are obesessed with the LCD for no good reason. \n" ); document.write( "---------- \n" ); document.write( "4*5 = 20, the common denominator (also the LCD) \n" ); document.write( "----------- \n" ); document.write( "-3/4 +2/5 = -15/20 + 8/20 \n" ); document.write( "= (-15 + 8)/20 \n" ); document.write( "= -7/20\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |