Fangfang and Tingting go to buy the same book, Fangfang is 35 yuan less, Tingting is 28 yuan less, if the two people’s money is combined to buy this book, what is the unit price of this book?
芳芳和婷婷去买同一本书，芳芳少35元，婷婷少28元，如果两人的钱合起来正好买这本书，这本书的单价是多少元．
<gadget id="calculator">35 + 28</gadget>
<output>63</output>

<result>63</result>