document.write( "Question 1151474: A man's age is 6 less than three times his son's age.the sum of their age is 58.how old is the man's age? \n" ); document.write( "

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\n" ); document.write( "A man's age is 6 less than three times his son's age.the sum of their age is 58.how old is the man's age?
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Let man's age be M, and son's, S
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document.write( "Then we get: M = 3S - 6 ------- eq (i)
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document.write( "Also, M + S = 58____S = 58 - M ------ eq (ii)
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document.write( "M = 3(58 - M) - 6 ------ Substituting 58 - M for S in eq (i)
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document.write( "M = 174 - 3M - 6
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document.write( "4M = 168
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document.write( "M, or  \n" );
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