document.write( "Question 844125: in 15 years, a child's age will be
\n" ); document.write( "9 years less than four times her current age.\r
\n" ); document.write( "\n" ); document.write( "Find her current age.
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Algebra.Com's Answer #508578 by algebrahouse.com(1659)\"\" \"About 
You can put this solution on YOUR website!
x = child's age now
\n" ); document.write( "x + 15 = child's age in 15 years\r
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\n" ); document.write( "\n" ); document.write( "x + 15 = 4x - 9 {in 15 years she will be 9 less than 4 times her age now}
\n" ); document.write( "15 = 3x - 9 {subtracted x from each side}
\n" ); document.write( "24 = 3x {added 9 to each side}
\n" ); document.write( "x = 8 {divided each side by 3}\r
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\n" ); document.write( "\n" ); document.write( "her current age is 8
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