Answer:
x = t / (r-s)
Step-by-step explanation:
1. rx = sx + t
2. Move all x values to left side of equal sign.
rx - sx = t
3. Pull the x out of the left side
x (r-s) = t
4. Isolate x to solve by dividing by the entity in the parenthesis.
x = t / (r-s)
