document.write( "Question 630681: Can you please help,Von is thrice as old as his brother Jon. Four years ago, he was 4 years less than 5 times Jon’s age at that time. How old are they now?
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Algebra.Com's Answer #397123 by Theo(13342)\"\" \"About 
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v = von's age
\n" ); document.write( "j = jon's age.
\n" ); document.write( "v = 3j is your first equation.
\n" ); document.write( "v-4 = 5(j-4)-4 is your second equation.
\n" ); document.write( "you have 2 equations that need to be solved simultaneously.
\n" ); document.write( "they are:
\n" ); document.write( "v = 3j
\n" ); document.write( "v-4 = 5(j-4)-4
\n" ); document.write( "simplify the second equation to get:
\n" ); document.write( "v-4 = 5j-20-4 which simplifies further to:
\n" ); document.write( "v-4 = 5j-24
\n" ); document.write( "add 4 to both sides of this equation to get:
\n" ); document.write( "v = 5j-20
\n" ); document.write( "your 2 equations are now:
\n" ); document.write( "v = 3j
\n" ); document.write( "v = 5j-20
\n" ); document.write( "since both expressions on the right side of each equation are equal to v, you can set these expressions equal to each other to get:
\n" ); document.write( "3j = 5j-20
\n" ); document.write( "subtract 5j from both sides of this equation to get:
\n" ); document.write( "-2s = -20
\n" ); document.write( "divide both sides of this equation by -2 to get:
\n" ); document.write( "j = 10
\n" ); document.write( "your first equation was:
\n" ); document.write( "v = 3j
\n" ); document.write( "this makes v = 30
\n" ); document.write( "your second equation was:
\n" ); document.write( "v-4 = 5(j-4)-4
\n" ); document.write( "replace v with 30 and j with 10 to get:
\n" ); document.write( "30-4 = 5(10-4)-4 which simplifies to:
\n" ); document.write( "26 = 50-20-4 which simplifies further to:
\n" ); document.write( "26 = 30-4 which simplifies further to:
\n" ); document.write( "26 = 26
\n" ); document.write( "the values of 30 for v and 10 for j are good.
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