To insert a left-subscript in Word 2007 using the equation editor, you can follow these steps:
- Click on the "Insert" tab in the ribbon at the top of the screen.
- Click on the "Equation" button in the "Symbols" section of the ribbon.
- In the equation editor, click on the "Scripts" button in the "Structures" section of the ribbon.
- Click on the "Left Subscript-Superscript" option.
- Type the text you want to appear as the subscript in the box on the left.
- Type the text you want to appear as the superscript in the box on the right.
- Click outside of the equation editor to return to your document.
This will insert a left-subscript in your document using the equation editor in Word 2007.
Note that this option only allows for a combination of left-subscript and superscript, so you will need to enter a blank space in the superscript box if you do not want to include one.