document.write( "Question 894135: A woman is 42 years of age and her daughter is 8 years old. in how many years will the mother be three times as old as her daughter? \n" ); document.write( "
Algebra.Com's Answer #541783 by Theo(13342)\"\" \"About 
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the mother is 42
\n" ); document.write( "the daughter is 8
\n" ); document.write( "in x years the mother will be 42 + x
\n" ); document.write( "in x years the daughter will be 8 + x
\n" ); document.write( "in x years the mother will be 3 times as old as the daughter.
\n" ); document.write( "your formula is:
\n" ); document.write( "42 + x = 3 * (8 + x)
\n" ); document.write( "simplify to get:
\n" ); document.write( "42 + x = 24 + 3x
\n" ); document.write( "subtract 3x from both sides of the equation and subtract 42 from both sides of the equation to get:
\n" ); document.write( "x - 3x = 24 - 42
\n" ); document.write( "simplify to get:
\n" ); document.write( "-2x = -18
\n" ); document.write( "divide both sides of the equation by -2 to get:
\n" ); document.write( "x = 9
\n" ); document.write( "in 9 years the mother will be 51 years old.
\n" ); document.write( "in 9 years the daughter will be 17 years old.
\n" ); document.write( "51 id 3 * 17 so the solution looks good.\r
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