44.5 + 22.25x = 178
Here, you want to isolate the variable and find the number of weeks.
Start by subtracting 44.5 from both 44.5 and 178.
This gives you 133.5
So you're left with 22.25x = 178
Now, you need to divide both numbers by 22.25.
This will leave you with x = 8, meaning it took 8 weeks.