In a subtraction formula, the sum of the minuend, the subtrahend and the difference is exactly 100. What is the minuend?
在一个减法算式里，被减数、减数与差相加的和正好是100，被减数是多少．
<gadget id="calculator">100 / 2</gadget>
<output>50</output>

<result>50</result>