ax-(b+nx)=0

Solution for ax-(b+nx)=0 equation:

Simplifying
ax + -1(b + nx) = 0
ax + (b * -1 + nx * -1) = 0
ax + (-1b + -1nx) = 0

Solving
ax + -1b + -1nx = 0

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add 'b' to each side of the equation.
ax + -1b + b + -1nx = 0 + b

Combine like terms: -1b + b = 0
ax + 0 + -1nx = 0 + b
ax + -1nx = 0 + b
Remove the zero:
ax + -1nx = b

Add 'nx' to each side of the equation.
ax + -1nx + nx = b + nx

Combine like terms: -1nx + nx = 0
ax + 0 = b + nx
ax = b + nx

Divide each side by 'x'.
a = bx-1 + n

Simplifying
a = bx-1 + n