document.write( "Question 257908: 5 years ago, Brian was twice as old as John.If Brian is 7 Years older than John, how old was Brian 9 years ago? \n" ); document.write( "
Algebra.Com's Answer #190067 by ankor@dixie-net.com(22740)\"\" \"About 
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Let b = Brian's present age
\n" ); document.write( "Let j = John's present age
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\n" ); document.write( "Write an equation for each statement:
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\n" ); document.write( "\"5 years ago, Brian was twice as old as John.\"
\n" ); document.write( "b - 5 = 2(j-5)
\n" ); document.write( "b - 5 = 2j - 10
\n" ); document.write( "b = 2j - 10 + 5
\n" ); document.write( "b = 2j - 5
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\n" ); document.write( "\"If Brian is 7 Years older than John,\"
\n" ); document.write( "b = j + 7
\n" ); document.write( "Replace b with (2j-5)
\n" ); document.write( "2j - 5 = j + 7
\n" ); document.write( "2j - j = 7 + 5
\n" ); document.write( "j = 12 yr is John's present age
\n" ); document.write( "then
\n" ); document.write( "12 + 7 = 19 yrs is Brian's present age
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\n" ); document.write( " how old was Brian 9 years ago?
\n" ); document.write( "19 - 9 = 10 yrs old, was Brian, 9 yrs ago
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\n" ); document.write( ":
\n" ); document.write( "Check solutions for present age in the statement
\n" ); document.write( "\"5 years ago, Brian was twice as old as John.\"
\n" ); document.write( "19 - 5 = 2(12-5)
\n" ); document.write( "14 = 2(7) \n" ); document.write( "
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