Xia Hong is x years old this year, and Xiao Fang is (x+5) years old this year. In another 10 years, how old are they?
夏红今年是x岁，小芳今年是(x+5)岁．再过10年，他们相差多少岁．
<gadget id="calculator">5 + 10</gadget>
<output>15</output>

<gadget id="calculator">15 - 10</gadget>
<output>5</output>

<result>5</result>