Answer:
![5\ shirts](https://img.qammunity.org/2020/formulas/mathematics/middle-school/y5vcg15mfbux0gjhpqpz0t06ea61601d7w.png)
Explanation:
Let
x------> the number of shirts ordered
y-----> the total cost of the order
we know that
The linear equations that represent each situation are
Shirts-2-Go
------> equation A
Shirts PLUS
------> equation B
To know how many shirts to purchase so that the total cost is the same in both companies, equate equation A and equation B
![12x+3=8x+23](https://img.qammunity.org/2020/formulas/mathematics/middle-school/vllbylsbwrfli3jbm1ytp7t56wnzfle04h.png)
![12x-8x=23-3](https://img.qammunity.org/2020/formulas/mathematics/middle-school/rgvxjejyyg6jrbp1na2xi0jmjudhlyvhi4.png)
![4x=20](https://img.qammunity.org/2020/formulas/mathematics/middle-school/b1d1v3nmaqx8m2va2wwwbjjw3v5jdmuvev.png)
![x=5\ shirts](https://img.qammunity.org/2020/formulas/mathematics/middle-school/95bqv0m9zukcld968qqaqvb8zdbvaqk80m.png)