1/5x − 2 = 1/3x + 8 would be better writtetn as (1/5)x − 2 = (1/3)x + 8, because doing so makes it clearer what the coefficients of x are.
Create two functions from (1/5)x − 2 = (1/3)x + 8L
y = (1/5)x − 2
y = (1/3)x + 8
Now let's eliminate the fractinal coefficients:
Mult. the first eq'n by 5, and then mult. the second by 3.
First result: 5y = x - 10. Now you do the second equation.