Which step contains a mathematical error made by sylvia

where x>11

Step-by-step explanation:

Niall gets $34 for 2 hours.

So, he gets dollars per hour.

Now, he owes $187 to his cousin.

Let the number of hours he works be = x

Let the money left with him after paying his cousin be = y

So, the equation forms:

Rather we can say it is :

where x>11

If we want to know how many hours are needed to pay the debt, we can consider y = 0

So, x = 11 hours

So, Niall needs 11 hours of work to pay back his cousin and after that all his earnings is 'y'. When x>11 then 'y' will have some money left.