document.write( "Question 1210382: Solve: 45x + 30 = 120
\n" ); document.write( "x = 12
\n" ); document.write( "x = 10
\n" ); document.write( "x = 6
\n" ); document.write( "x = 2 \n" ); document.write( "
Algebra.Com's Answer #852166 by Edwin McCravy(20054)\"\" \"About 
You can put this solution on YOUR website!
\r\n" );
document.write( "\r\n" );
document.write( "Solve: 45x + 30 = 120\r\n" );
document.write( "x = 12\r\n" );
document.write( "x = 10\r\n" );
document.write( "x = 6\r\n" );
document.write( "x = 2\r\n" );
document.write( "\r\n" );
document.write( "I think that this student may have only gotten to the stage of finding\r\n" );
document.write( "solutions by trial and error by substitution.\r\n" );
document.write( "\r\n" );
document.write( "      Try x = 12\r\n" );
document.write( "   45x + 30 = 120\r\n" );
document.write( "45(12) + 30 = 120\r\n" );
document.write( "   540 + 30 = 120\r\n" );
document.write( "        570 = 120, so x = 12 is NOT the correct answer.\r\n" );
document.write( "\r\n" );
document.write( "      Try x = 10\r\n" );
document.write( "   45x + 30 = 120\r\n" );
document.write( "45(10) + 30 = 120\r\n" );
document.write( "   450 + 30 = 120\r\n" );
document.write( "        480 = 120, so x = 10 is NOT the correct answer.\r\n" );
document.write( "\r\n" );
document.write( "      Try x = 6\r\n" );
document.write( "   45x + 30 = 120\r\n" );
document.write( " 45(6) + 30 = 120\r\n" );
document.write( "   270 + 30 = 120\r\n" );
document.write( "        300 = 120, so x = 6 is NOT the correct answer.\r\n" );
document.write( "\r\n" );
document.write( "      Try x = 2\r\n" );
document.write( "   45x + 30 = 120\r\n" );
document.write( " 45(2) + 30 = 120\r\n" );
document.write( "    90 + 30 = 120\r\n" );
document.write( "        120 = 120, so x = 2 IS the correct answer.\r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" ); document.write( "
\n" );