document.write( "Question 1006047: Your parents have a combined age of 90. One of your parents is 4 years older than the other. Set up a system of equations. Define your variables. Find the age of your parents \n" ); document.write( "
Algebra.Com's Answer #622184 by josgarithmetic(39620)\"\" \"About 
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x, MOTHER
\n" ); document.write( "y, FATHER
\n" ); document.write( "Father is usually older than Mother but not for every couple.
\n" ); document.write( "\"system%28x%2By=90%2Cy-x=4%29\"
\n" ); document.write( "Do the rest.
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