document.write( "Question 50865: students in Japan go to school an average of 232+3x days, while students in the U.S. go to school an average of 184+4x days. How many more days, on average does a japanese student attend school each year? \n" ); document.write( "
Algebra.Com's Answer #33903 by AnlytcPhil(1806)\"\" \"About 
You can put this solution on YOUR website!
students in Japan go to school an average of 232+3x days, while students in the\r\n" );
document.write( "U.S. go to school an average of 184+4x days. How many more days, on average\r\n" );
document.write( "does a japanese student attend school each year?\r\n" );
document.write( "\r\n" );
document.write( "First think how you would do if it had read numbers instead of algebraic\r\n" );
document.write( "expressions.\r\n" );
document.write( "\r\n" );
document.write( "Suppose first that it had read this way, as in the second or third grade:\r\n" );
document.write( "\r\n" );
document.write( "Students in Japan go to school an average of 250 days, while students in the\r\n" );
document.write( "U.S. go to school an average of 150 days. How many more days, on average does a\r\n" );
document.write( "japanese student attend school each year?\r\n" );
document.write( "\r\n" );
document.write( "In the 2nd grade you would go:\r\n" );
document.write( "\r\n" );
document.write( "250 - 150 \r\n" );
document.write( "\r\n" );
document.write( "and get 100 days.\r\n" );
document.write( "\r\n" );
document.write( "So in algebra you go: \r\n" );
document.write( "\r\n" );
document.write( "(232+3x) - (184+4x) and get 100 days.\r\n" );
document.write( "\r\n" );
document.write( "Now you remove the parentheses by sticking a factor 1 just before them:\r\n" );
document.write( "\r\n" );
document.write( "1(232+3x) - 1(184+4x)\r\n" );
document.write( "\r\n" );
document.write( "Then we remove the parentheses by the distributive principle:\r\n" );
document.write( "\r\n" );
document.write( "232 + 3x - 184 - 4x\r\n" );
document.write( "\r\n" );
document.write( "Then combine like terms\r\n" );
document.write( "\r\n" );
document.write( "   48 - x \r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" ); document.write( "
\n" );