Explain what can happen if you line up the digits incorrectly when you rewrite additional problem

If we line up the digits incorrectly when we rewrite additional problem, we can get wrong answer.

Step-by-step explanation:

For example, we have the addition problem of 74+152, if we do not lined up it correctly while rewriting it for addition, we can get 792 which is wrong answer.

So to get the right answer, we need to lined it up correctly by placing them in right order according to their place value, as

HTO

152

+74

226 → which is the right answer.

ab will be equal to