document.write( "Question 376982: i am thinking of number i multiply it by 5 and add 77 i get the same answer if i multiply by 8 and subtract 7 what is my number? \n" ); document.write( "
Algebra.Com's Answer #268045 by bostonmathtutor(8)![]() ![]() ![]() You can put this solution on YOUR website! First, we set up the equality denoting this mystery number as X:\r \n" ); document.write( "\n" ); document.write( "5X + 77 = 8X - 7\r \n" ); document.write( "\n" ); document.write( "Combine like terms:\r \n" ); document.write( "\n" ); document.write( "84 = 3X\r \n" ); document.write( "\n" ); document.write( "28 = X \n" ); document.write( " |