document.write( "Question 677835: -1/4x + 3/5 = 2 7/20 \n" ); document.write( "
Algebra.Com's Answer #421098 by checkley79(3341)\"\" \"About 
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-1/4x + 3/5 = 2 7/20
\n" ); document.write( "-1/4x=-3/5+47/20
\n" ); document.write( "-1/4x=(-3*4+47)/20
\n" ); document.write( "-1/4x=(-12+47)/20
\n" ); document.write( "-1/4x=35/20
\n" ); document.write( "35*4x=-20
\n" ); document.write( "140x=20
\n" ); document.write( "x=20/140
\n" ); document.write( "x=1/7 ans.
\n" ); document.write( "Proof:
\n" ); document.write( "1/4(1/7)+3/5=47/20
\n" ); document.write( "1/4*7/1+3/5=47/20
\n" ); document.write( "7/4+3/5=47/20
\n" ); document.write( "(5*7+3*4)/4*5=47/20
\n" ); document.write( "(35+12)/20=47/20
\n" ); document.write( "47/20=47/20
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