document.write( "Question 1156198: The sum of two numbers is 23.The greater number is 4 less than 2 times the smaller number.What are the two numbers? \n" ); document.write( "
Algebra.Com's Answer #778881 by alanc(27)![]() ![]() You can put this solution on YOUR website! Translate this word problem into an equation. \n" ); document.write( "Let the letter a = the greater number. \n" ); document.write( "let b = the smaller number.\r \n" ); document.write( "\n" ); document.write( "We see a + b = 23 \n" ); document.write( "Also \n" ); document.write( "a = 2b - 4 \n" ); document.write( "We have a system of 2 equations in 2 variables. \n" ); document.write( "Let us use substitution.\r \n" ); document.write( "\n" ); document.write( "(2b - 4) + b = 23 \n" ); document.write( "3b - 4 = 23 \n" ); document.write( "3b - 4 + 4 = 23 + 4 \n" ); document.write( "3b = 27 \n" ); document.write( "3b / 3 = 27 / 3 \n" ); document.write( "b = 9 \n" ); document.write( "So... \n" ); document.write( "a = 2*9 - 4 \n" ); document.write( "a = 18 - 4 = 14\r \n" ); document.write( "\n" ); document.write( "The two numbers are 14 and 9 \n" ); document.write( " |