Explanation :
To solve for x, we need to isolate it on one side of the equation.
Start with the equation: 7x - c = k
To isolate x, first, add c to both sides of the equation:
7x - c + c = k + c
This simplifies to:
7x = k + c
To solve for x, divide both sides of the equation by 7:
(7x)/7 = (k + c)/7
This simplifies to:
x = (k + c)/7
So the solution for x is:
x = (k + c)/7