How to add and subtract with Windows7 keyboard?

You don't need to input directly with the keyboard, you can input the plus sign and the minus sign in other ways.

You can use the symbol input device of the input method to input the addition and subtraction signs, and the operation steps are as follows (here, take QQ Wu Bi as an example):

1, switch the QQ five-stroke input method, click the Settings button, and select the symbol;

2. In the symbol window that pops up, select a special symbol->; & gt Math/Unit, click+/-;

3. After the insertion is completed, click ×.

The sample diagram is as follows: