document.write( "Question 13438: please help me solve: 2.1x + 45.2 = 3.2 - 8.4x and if possible show the check....thank you, Sonya \n" ); document.write( "
Algebra.Com's Answer #6796 by Earlsdon(6294)\"\" \"About 
You can put this solution on YOUR website!
Solve for x:\r
\n" ); document.write( "\n" ); document.write( "\"2.1x+%2B+45.2+=+3.2+-+8.4x\" Add 8.4x to both sides.
\n" ); document.write( "\"10.5x+%2B+45.2+=+3.2\" Subtract 45.2 from both sides.
\n" ); document.write( "\"10.5x+=+-+42\" Divide both sides by 10.5
\n" ); document.write( "\"x+=+-4\"\r
\n" ); document.write( "\n" ); document.write( "Check: Substitute -4 for x in the original equation.\r
\n" ); document.write( "\n" ); document.write( "\"2.1%28-4%29+%2B+45.2+=+3.2+-+8.4%28-4%29\"
\n" ); document.write( "\"-8.4+%2B+45.2+=+3.2+%2B+33.6\"
\n" ); document.write( "\"36.8+=+36.8\" Ok
\n" ); document.write( "
\n" );