To solve for x, we can use cross-multiplication.
First, we will simplify the right side of the equation by reducing the fraction:
12/20 = 3/5
Now, we have:
x/5 = 3/5
To isolate x, we will multiply both sides by 5:
x/5 * 5 = 3/5 * 5
x = 15/5
Simplifying the fraction on the right side, we get:
x = 3
Therefore, x is equal to 3.