document.write( "Question 644433: In 5 years, Brayan will be 3 times as old as he was 7 years ago. How old is he? \n" ); document.write( "

Algebra.Com's Answer #405052 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+x+\"$ = his age now
\n" ); document.write( " $\"+x+%2B+5+\"$ = his age in 5 years
\n" ); document.write( " $\"+x+-+7+\"$ = his age 7 years ago
\n" ); document.write( "--------
\n" ); document.write( "given:
\n" ); document.write( " $\"+x+%2B+5+=+3%2A%28+x+-+7+%29+\"$
\n" ); document.write( " $\"+x+%2B+5+=+3x+-+21+\"$
\n" ); document.write( " $\"+2x+=+21+%2B+5+\"$
\n" ); document.write( " $\"+2x+=+26+\"$
\n" ); document.write( " $\"+x+=+13+\"$
\n" ); document.write( "He is 13 now \n" ); document.write( "

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