document.write( "Question 1147889: The combined age of two brothers is 35 years. Seven years ago, one brother was twice the age of the other. How many years apart were they born? Need help with the equation also using let statements, Thanks. \n" ); document.write( "

Algebra.Com's Answer #769221 by josgarithmetic(39617) $\"\"$ $\"About$

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Older brother, b
\n" ); document.write( "Younger brother, 35-b\r
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\n" ); document.write( "\n" ); document.write( " $\"b-7=2%2835-b-7%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"b-7=70-2b-14\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"3b=70-14%2B7\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"3b=63\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"b=21\"$ -------age of younger brother\r
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\n" ); document.write( "\n" ); document.write( "-\r
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\n" ); document.write( "\n" ); document.write( " $\"b-%2835-b%29\"$
\n" ); document.write( " $\"b-35%2Bb\"$
\n" ); document.write( " $\"2b-35\"$
\n" ); document.write( " $\"42-35\"$
\n" ); document.write( " $\"7\"$ ------------------how many years apart they were born\r
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\n" ); document.write( "\n" ); document.write( "-------------------------------------------------
\n" ); document.write( " $\"%2835-b%29-b\"$ $\"wrong\"$ $\"expression\"$
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