document.write( "Question 242113: We tried to solve this type of problem.....thought we were correct, however the teacher said otherwise. Of course she said we could \"re-do\" the incorrect problems, but she gave no further explanation. Use prime factors to simplify each expression.
\n" ); document.write( "4 4/15 + 2 4/39= \n" ); document.write( "

Algebra.Com's Answer #177244 by stanbon(75887) $\"\"$ $\"About$

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4 4/15 + 2 4/39=
\n" ); document.write( "---------------------------
\n" ); document.write( "(15*4+4)/15 + (39*2+4)/39
\n" ); document.write( "-------------------------------
\n" ); document.write( "(64/15) + (82/39)
\n" ); document.write( "---
\n" ); document.write( "Use prime factor form to find the least common denominator:
\n" ); document.write( "----
\n" ); document.write( "15 = 3*5
\n" ); document.write( "39 = 3*13
\n" ); document.write( "------
\n" ); document.write( "The lcm is 3*5*13 = 195
\n" ); document.write( "--------------------------
\n" ); document.write( "Rewrite each factor with the lcm as its denominator:
\n" ); document.write( "(64*13/lcm) + (82*5/lcm)
\n" ); document.write( "------------------------------
\n" ); document.write( "Combine the numerators over the lcm:
\n" ); document.write( "(832 + 410)/lcm
\n" ); document.write( "------
\n" ); document.write( "1242/(195)
\n" ); document.write( "=================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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