document.write( "Question 1062815: What should be addedto twice the rational number -7/3 to get3/7 \n" ); document.write( "

Algebra.Com's Answer #677816 by josmiceli(19441) $\"\"$ $\"About$

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$\"+2%2A%28-7%2F3+%29+%2B+x+=+3%2F7+\"$
\n" ); document.write( "Multiply both sides by $\"+21+\"$
\n" ); document.write( " $\"+-98++%2B+21x+=+9+\"$
\n" ); document.write( "Add $\"+98+\"$ to both sides
\n" ); document.write( " $\"+21x+=+107+\"$
\n" ); document.write( " $\"+x+=+107%2F21+\"$
\n" ); document.write( "107/21 must be added to -7/3
\n" ); document.write( "---------------------------
\n" ); document.write( "check:
\n" ); document.write( " $\"+-14%2F3+%2B+107%2F21+=+3%2F7+\"$
\n" ); document.write( " $\"+-98%2F21+%2B+107%2F21+=+9%2F21+\"$
\n" ); document.write( " $\"+107%2F21+=+107%2F21+\"$
\n" ); document.write( "OK
\n" ); document.write( " \n" ); document.write( "

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