Given the equation: (km / 3) - 2x = 4, it is essential to isolate x to obtain the expression to solve it. This is done below:
(km / 3) - 2x = 4
Adding 2x to both sides:
(km / 3) - 2x + 2x = 4 + 2x
(km / 3) = 4 + 2x
Subtracting 4 from both sides:
(km / 3) - 4 = 4 + 2x - 4
(km / 3) - 4 = 2x
Dividing 2 from both sides:
[(km / 3) - 4] /2 = 2x /2
[(km / 3) - 4] /2 = x
x = (km / 6) - 2
