document.write( "Question 370619: Your favorite restaurant offers a total of 13 desserts, of which 11 have ice cream as a main ingredient and 9 have fruit as a main ingredient. Assuming that all of them have either ice cream or fruit or both as a main ingredient, how many have both? \n" ); document.write( "
Algebra.Com's Answer #264192 by amoresroy(361)\"\" \"About 
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Let x = the number of desserts which have both ice cream and fruit\r
\n" ); document.write( "\n" ); document.write( "11 + 9 - x = 13\r
\n" ); document.write( "\n" ); document.write( " x = 7\r
\n" ); document.write( "\n" ); document.write( "The are 7 desserts which have both ice cream and fruit
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