1. Let's call the number of carter school: "x" and "y" the number of alternative school. Then, you have that:
- The number of charter schools is 4 less than twice the number of alternative schools.
- There are 48 charter schools in the country.
2. So, you have:
x=2y-4 (i)
x=48 (ii)
3. Then, when you substitute x=48 into the equation (i), you obtain:
x=2y-4
48=2y-4
4. Now, you must clear "y, as below:
48+4=2y
2y=52
y=52/2
y=26
How many alternative schools are in the county?
The answer is: There are 26 alternative schools.
