document.write( "Question 1040278: The sum of one-fifth of Lucy's age and one-seventh of her age is 12. Use algebra to workout her age. Plz help \n" ); document.write( "
Algebra.Com's Answer #655094 by jorel555(1290)![]() ![]() ![]() You can put this solution on YOUR website! Let n be Lucy's age. Then \n" ); document.write( "n/5+n/7=12 \n" ); document.write( "7n+5n=420 \n" ); document.write( "n=420/12=35 ☺☺☺ \n" ); document.write( " |