document.write( "Question 1095931: the total cost of 2 books and 7 pens is 79 rs and the total cost of 7 books and 5 pens is 77 rs. find the cost of1 book and 2 pens... \n" ); document.write( "
Algebra.Com's Answer #710429 by ikleyn(52797)\"\" \"About 
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\n" ); document.write( "Either the condition contains an error (= is wrong), or the problem makes no sense.\r
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\n" ); document.write( "\n" ); document.write( "Such problems EITHER have an EXACT solution, OR have no solutions at all.\r
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\n" ); document.write( "\n" ); document.write( "The term and the conception \"approximate solution\" is NOT APPLICABLE for this problem.\r
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