In a subtraction formula, the minuend is 50 more than the minuend, and the difference is 70 less than the minuend. What is the minuend?
在一个减法算式中，被减数比减数多50，差比被减数少70，被减数是多少．
<gadget id="calculator">50 + 70</gadget>
<output>120</output>

<result>120</result>