\(\frac{a - c}{x - a}\) = m Multiply both sides by (x - a)
a - c = m (x - a) Use the Distributive Property
a - c = mx - ma Add ma to both sides
a - c + ma = mx Divide both sides by m
\(\frac{a - c + ma}{m}\) = x Switch the sides to make it easier to read
x = \(\frac{a - c + ma}{m}\)
