document.write( "Question 94336: 1/3x + 3/4x = 13 \n" ); document.write( "

Algebra.Com's Answer #68680 by checkley71(8403) $\"\"$ $\"About$

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x/3+x/4=13
\n" ); document.write( "(4x+3x)/12=13 cross multiply
\n" ); document.write( "7x=156
\n" ); document.write( "x=156/7 answer.
\n" ); document.write( "proof
\n" ); document.write( "156/7*(1/3)+156/7(1/4)=13
\n" ); document.write( "156/21+156/28=13
\n" ); document.write( "7.42857+5.571428=13
\n" ); document.write( "13=13
\n" ); document.write( " \n" ); document.write( "

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