To solve this problem, we need to determine the value of x, which represents the number of bottles Don buys from Shop A.
We know that Don buys 180 bottles from Shop B and 220 bottles from Shop C. The total number of bottles Don buys is 550.
We can set up the equation as follows:
Number of bottles bought from Shop A + Number of bottles bought from Shop B + Number of bottles bought from Shop C = Total number of bottles bought
x + 180 + 220 = 550
Let's simplify and solve for x:
x + 400 = 550
To isolate x, we subtract 400 from both sides of the equation:
x + 400 - 400 = 550 - 400
x = 150
The value of x is 150.
#### 150
The answer is: 150
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
Don buys recyclable bottles in a small town. Shop A normally sells him x bottles, shop B sells him 180 bottles and Shop C sells him the rest. Don buys 220 bottles from Shop C if he is capable of buying only 550 bottles.

### Answer:
