What I Have Learned In subtracting dissimilar (1)___ and mixed numbers, we have to (2) with (3). denominators. Then (4) the first fraction. Next, is to (5) the whole numbers and (6). by reducing it to the If the answer has a common factor, (7). term. (8) To regroup, you borrow from the column directly to the left (make sure to subtract (9) from that column) and (10) it to the column you're working with. That will give you enough to subtract.