How to get closest multiple input fields value in jQuery ajax

The table have multiple items like (apple, mango, orange) i want to get the qty table data closest multiple input values on separate inputs. But i receive only single input value from it. So i can’t send it in ajax properly. I am trying to get multiple input values of closest table row but i get only one value from it.

Any help will be appreciated.

<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Mutiple Qty Values</title>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js" charset="utf-8"></script>
</head>
<body>
<div class="alertContainer"></div>
<table>
    <thead>
        <tr>
            <td>Id</td>
            <td>Item</td>
            <td>Qty</td>
            <td>Action</td>
        </tr>
        <tbody>
            <form method="post">
            <tr>
                <td>1</td>
                <td>apple</td>
                <td>
                    <input type="hidden" name="multi_qty[]" value="10" class="qty">
                    <input type="hidden" name="multi_qty[]" value="20" class="qty">
                </td>
                <td><button type="submit" name="delete_qty" class="deleteBtn">Delete</button></td>
            </tr>
            <tr>
                <td>2</td>
                <td>mango</td>
                <td>
                    <input type="hidden" name="multi_qty[]" value="40" class="qty">
                    <input type="hidden" name="multi_qty[]" value="50" class="qty">
                </td>
                <td><button type="submit" name="delete_qty" class="deleteBtn">Delete</button></td>
            </tr>
            <tr>
                <td>3</td>
                <td>orange</td>
                <td>
                    <input type="hidden" name="multi_qty[]" value="70" class="qty">
                    <input type="hidden" name="multi_qty[]" value="80" class="qty">
                </td>
                <td><button type="submit" name="delete_qty" class="deleteBtn">Delete</button></td>
            </tr>
            </form>
        </tbody>
    </thead>
</table>
<div class="result">
    <input type="text" class="input_result">
    <input type="text" class="input_result">
</div>
<script>
  $(document).ready(function(){ 
    $('.deleteBtn').click(function(e){ 
      e.preventDefault();
      var qtyValue = $(this).closest('tr').find('.qty').val();
      $('.input_result').val(qtyValue);

     // ajax code start
      var inputResult = $('.input_result').val();
      $.ajax({
        url:'delete-item.php',
        type:'post',
        data:'inputResult='+inputResult,
        success:function(result){
            $('.alertContainer').html('item deleted');
        }
      })
    })
})
</script>