document.write( "Question 88038: sam is 10 years older than jack.twice sam`s age subtracted from 6 times jack`s age is 7 more than jack`s age. find jack and sam`s age \n" ); document.write( "
Algebra.Com's Answer #63932 by ankor@dixie-net.com(22740)\"\" \"About 
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s = sam's age now; j = jacks age now
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\n" ); document.write( "Write an equation for each statement:
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\n" ); document.write( "\"sam is 10 years older than jack.\"
\n" ); document.write( " s = j + 10
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\n" ); document.write( "\"twice sam`s age subtracted from 6 times jack`s age is 7 more than jack`s age.\"
\n" ); document.write( "6j - 2s = j + 7
\n" ); document.write( "6j - j - 2s = 7; subtract j from both sides
\n" ); document.write( "5j - 2s = 7
\n" ); document.write( "Substitute (j+10) for s (the 1st equation)
\n" ); document.write( "5j - 2(j+10) = 7
\n" ); document.write( "5j - 2j - 20 = 7
\n" ); document.write( "3j = 7 + 20
\n" ); document.write( "3j = 27
\n" ); document.write( "j = 27/3
\n" ); document.write( "j = 9 yrs old
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\n" ); document.write( "obviously s = 19 yrs old
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\n" ); document.write( "Check solutions using the statement:
\n" ); document.write( "\"twice sam`s age subtracted from 6 times jack`s age is 7 more than jack`s age.\"
\n" ); document.write( " 6(9) - 2(19) = 9 + 7
\n" ); document.write( " 54 - 38 = 16\r
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