document.write( "Question 58771: How do i solve 5x+9=30 \n" ); document.write( "
Algebra.Com's Answer #40302 by checkley71(8403)\"\" \"About 
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5X+9=30
\n" ); document.write( "5X=30-9
\n" ); document.write( "5X=21
\n" ); document.write( "X=21/5
\n" ); document.write( "X=4.2
\n" ); document.write( "PROOF
\n" ); document.write( "5*4.2+9=30
\n" ); document.write( "21+9=30
\n" ); document.write( "30=30
\n" ); document.write( "
\n" );