例1.L,M,N are both real number and L>N,M>N
例2.The market value of a product decreased by 10 percent of its purchase price each month. If the product was purchased in January for its market value of $1,000, what was its market value two months later?
例3. Which of the following equations can be used to find the value of x if 5 less than 3x is 6 more than the product of 2 and x?
例4.The figure above consists of 16 squares. If the figure were folded along the dotted diagonal to form a flat triangle, then 17 minus the number in the square that would coincide with the square containing 17 would be
例5. If two train are 120 miles apart and are traveling toward each other at a constant rate of 37mph and 43mph, respectively, how far apart will they be exactly 1 hour before they meet?