The best part of this problem is that it has one unknown variable in the form of "x" and a single equation. So getting to the desired solution becomes very easy. The equation given in the question is 10 - 5x = 20 - 5x = 20 - 10 - 5x = 10 - x = 10/5 - x = 2 Multiplying both sides with -1 we get x = -2 So the value of x is -2. I hope the procedure is clear enough for you to understand.
