Formula Center, numbering right method in Word

1, input formula and serial number such as "z=x+y (1)", do not need to add brackets between the two;
2, double-click the blank position of the horizontal ruler, pop up the "tabs" dialog box, click "Clear All";
3, observe the ruler length, shown in the position (such as 24);
4, enter half the length of the ruler (such as 12), click "Center", click "Settings";
5, then enter the length of the ruler (such as 24), click on "Right", click Settings;
6, click "OK" to close the dialog box;
7, move the cursor to the beginning of the line, press the "tab" key;
8, then move the cursor to the ordinal brackets, press the "tab" key

Formula Center, numbering right method in Word