document.write( "Question 1101511: Max discovered that if he subtracted 7 from his age and multiplied it by 7, he got the same answer as subtracting 9 from his age and multiplying by 9. How old is Max? \n" ); document.write( "
Algebra.Com's Answer #716123 by ikleyn(52781)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "Let x be Max's age.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "7(x-7) = 9(x-9) ------ this is what the description says.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "7x - 49 = 9x - 81\r\n" ); document.write( "\r\n" ); document.write( "81 - 49 = 2x\r\n" ); document.write( "\r\n" ); document.write( "2x = 32\r\n" ); document.write( "\r\n" ); document.write( "x = 32/2 = 16.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Answer. Max is 16 years old.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "The solution and the answer by @josgarithmetic are incorrect.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |