document.write( "Question 87642: my daughter is learning fractions in 6th grade. The confusion starts during word problems. In some cases the fraction is inversed and then multiplied and in some its taken directly. I too fail to explain it - as their teacher has not given the rule when to invert the fraction and when not to. Please help - her exams are near. \n" ); document.write( "
Algebra.Com's Answer #63550 by pkgupta_mathstutor@yahoo.co.in(2)![]() ![]() ![]() You can put this solution on YOUR website! For ADDITION & SUBTRACTION the FRACTIONS ARE taken as it is they are given \n" ); document.write( "and the operation is performed . \n" ); document.write( "Example1: Add -1/5 and 2/3 \n" ); document.write( "Solution: \n" ); document.write( "STEP 1: -1/5 + 2/3 \n" ); document.write( "STEP 2: Take LCM of 5 & 3 which is 15 , now multiply Numerator &Denominator of 1st Fraction by 3 & 2nd Fraction by 5 to make Denominators of both Fractions \n" ); document.write( "equal. \n" ); document.write( "STEP 3:we get -3/15 +10/15 as Denominators of both Fractions are equal we add Numerators. \n" ); document.write( "STEP 4:as signs of -3 & 10 are different we subtract 3 from 10 thus we get \n" ); document.write( " 7/15 as ANSWER \n" ); document.write( "HENCE -1/5 + 2/3 = 7/15 \n" ); document.write( "NOTE: (If signs of two integers are same we ADD them if there signs are different we SUBTRACT smaller from bigger one )\r \n" ); document.write( "\n" ); document.write( "FOR MULTIPLICATION & DIVISION \n" ); document.write( " Example2: Mutiply -3/4 and 5/7 \n" ); document.write( "Solution: \n" ); document.write( "STEP 1: -3/4 X 5/7 \n" ); document.write( "WE multiply both Numerators & Denominators of the fractions but before that we reduce them to their lowest terms. \n" ); document.write( "STEP 2:(-3 X 5) /(4 X 7) = -15 / 28 \n" ); document.write( "HENCE -3/4 X 5/7 = -15 / 28 ANSWER\r \n" ); document.write( "\n" ); document.write( "Example3: Divide 4/9 by 10/27 \n" ); document.write( "Solution: \n" ); document.write( "STEP 1: (4/9)/(10/27) \n" ); document.write( "STEP 2:(4/9 X 27/10 ) WE RECIPROCATE THE 2nd fraction to convert Division into Multiplication \n" ); document.write( "STEP 3: ON REDUCING WE GET 6/5 AS ANSWER\r \n" ); document.write( "\n" ); document.write( "HOPE YOU GOT YOUR SOLUTION pkgupta_mathstutor@yahoo.co.in \n" ); document.write( " \n" ); document.write( " |