Question

Solve a(x - b) - 2k = l for k

Answer 1

A(x - b) - 2k = l 
ax - ab - 2k = l

Subtract ax, add ab to both sides

- 2k = l - ax + ab

Divide by - 2 to isolate variable K

k = (l - ax + ab) / - 2 or $k = \frac{l - ax + ab}{-2}$