document.write( "Question 129455: 5 years ago a son was 1/3 the age of his father. 5 years from now he will be 1/2 the age of his father. How old are both now? \n" ); document.write( "
Algebra.Com's Answer #94883 by scott8148(6628)\"\" \"About 
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let x=\"son now\" and y=\"father now\"\r
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\n" ); document.write( "\n" ); document.write( "\"5 years ago a son was 1/3 the age of his father\" __ 3(x-5)=y-5 __ 3x-15=y-5\r
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\n" ); document.write( "\n" ); document.write( "\"5 years from now he will be 1/2 the age of his father\" __ 2(x+5)=y+5 __ 2x+10=y+5\r
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\n" ); document.write( "\n" ); document.write( "subtracting second equation from first __ x-25=-10\r
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\n" ); document.write( "\n" ); document.write( "substitute the value of x into either equation to find y
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