The simplification of a rational multiplication or division problem is given. each step is numbered under the problem in parenthesis - (1), (2), (3), and (4). identify the number of the first step where a mistake occurs, if there are any.

There is no error the steps of the problem.

The problem is solved correctly step by step.  In step 1, the person took the reciprocal of the second fraction and changed to multiplication.

In step 2, the factored the second fraction.

In steps 3 and 4, the cancelled out common factors in the top and bottom correctly.

However, if the workers do outside of what's normally expected, go ahead and tip.