document.write( "Question 10285: my question is,I have a math question that looks like this y-7=8. the uestion is what does the letter (y)and (x) represent when working with evaluate,simplify, and sloving variable expression and equations \n" ); document.write( "
Algebra.Com's Answer #5425 by longjonsilver(2297)![]() ![]() You can put this solution on YOUR website! the \"letter\" is the \"unknown\" in an equation. It is the thing you are trying to find the value(s) of.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Evaluate means work out, eg Evaluate 3(2x-5) when x=4, gives 3(2(4)-5), which is 3(8-5), which is 3(3) which is 9.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Simplify means just that, eg Simplify 3x-4y+2x-5xy gives 5x-4y-5xy\r \n" ); document.write( "\n" ); document.write( "Solve means find the \"roots\" of the given equation. This is any points that satisfy y=0. In other words, find the value(s) of x where the equation crosses the x-axis.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "jon. \n" ); document.write( " \n" ); document.write( " |