document.write( "Question 947161: John is 6 years older than his brother. He will be twice as old as his brother in 4 years. How old is John now? \n" ); document.write( "
Algebra.Com's Answer #577866 by macston(5194)\"\" \"About 
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B=brother's age;J=John's age=B+6
\n" ); document.write( "J+4=2(B+4) Substitute for J
\n" ); document.write( "(B+6)+4=2(B+4)
\n" ); document.write( "B+10=2B+8 Subtract 8 from each side
\n" ); document.write( "B+2=2B Subtract B from each side
\n" ); document.write( "2=B John's brother is 2 years old
\n" ); document.write( "J=B+6=8 ANSWER John is 8 years old
\n" ); document.write( "CHECK
\n" ); document.write( "J+4=2(B+4)
\n" ); document.write( "8+4=2(2+4)
\n" ); document.write( "12=12
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