document.write( "Question 652468: 51 = 72 – 3x \n" ); document.write( "
Algebra.Com's Answer #408027 by ankor@dixie-net.com(22740)\"\" \"About 
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51 = 72 – 3x
\n" ); document.write( "add 3x to both sides
\n" ); document.write( "3x + 51 = 72
\n" ); document.write( "subtract 51 from both sides
\n" ); document.write( "3x = 72 - 51
\n" ); document.write( "3x = 21
\n" ); document.write( "divide both sides by 3
\n" ); document.write( "x = 21/3
\n" ); document.write( "x = 7
\n" ); document.write( ":
\n" ); document.write( "Check solution in original problem
\n" ); document.write( "51 = 72 - 3(7)
\n" ); document.write( "51 = 72 - 21 \n" ); document.write( "
\n" );