It is known that A+B=100, if A is reduced by 35 and B is increased by 15, then what is the sum of A and B at this time.
已知A+B=100，如果A减少35，B增加15，那么此时A与B的和是多少．
<gadget id="calculator">100 - 35</gadget>
<output>65</output>

<gadget id="calculator">65 + 15</gadget>
<output>80</output>

<result>80</result>