document.write( "Question 786658: elena is 6 years younger than her brother.the sum of their ages is 30 how old is elena oh you have to guess and test \n" ); document.write( "
Algebra.Com's Answer #477933 by wilft1(217)![]() ![]() You can put this solution on YOUR website! guess and test all you want, the formula for this would be\r \n" ); document.write( "\n" ); document.write( "x + x - 6 = 30\r \n" ); document.write( "\n" ); document.write( "add 6 to both sides\r \n" ); document.write( "\n" ); document.write( "x + x = 36\r \n" ); document.write( "\n" ); document.write( "combine like terms\r \n" ); document.write( "\n" ); document.write( "2x = 36\r \n" ); document.write( "\n" ); document.write( "divide by 2\r \n" ); document.write( "\n" ); document.write( "x = 18\r \n" ); document.write( "\n" ); document.write( "x - 6 = 12\r \n" ); document.write( "\n" ); document.write( "elena is 12 and her brother is 18 \n" ); document.write( " |