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Li Hua has 14 books and Zhang Jun has 22 books. How many books will the general give Li Hua? This is the number of their books.
B analysis: suppose Zhang Qiang borrowed x books, then Li Feng borrowed (22-x) books. According to the same number of books they borrowed, they can get the equation and then get the answer. Suppose Zhang Qiang borrows X books and Li Feng borrows (22-x) books, then 40+x=30+(22-x), and the solution is: x=6.
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