ax+box-c=0

Solution for ax+box-c=0 equation:

Simplifying
ax + box + -1c = 0

Solving
ax + box + -1c = 0

Solving for variable 'a'.

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

Add '-1box' to each side of the equation.
ax + box + -1box + -1c = 0 + -1box

Combine like terms: box + -1box = 0
ax + 0 + -1c = 0 + -1box
ax + -1c = 0 + -1box
Remove the zero:
ax + -1c = -1box

Add 'c' to each side of the equation.
ax + -1c + c = -1box + c

Combine like terms: -1c + c = 0
ax + 0 = -1box + c
ax = -1box + c

Divide each side by 'x'.
a = -1bo + cx-1

Simplifying
a = -1bo + cx-1