x-(c+a)=h

Solution for x-(c+a)=h equation:

Simplifying
x + -1(c + a) = h

Reorder the terms:
x + -1(a + c) = h
x + (a * -1 + c * -1) = h
x + (-1a + -1c) = h

Reorder the terms:
-1a + -1c + x = h

Solving
-1a + -1c + x = h

Solving for variable 'a'.

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

Add 'c' to each side of the equation.
-1a + -1c + c + x = c + h

Combine like terms: -1c + c = 0
-1a + 0 + x = c + h
-1a + x = c + h

Add '-1x' to each side of the equation.
-1a + x + -1x = c + h + -1x

Combine like terms: x + -1x = 0
-1a + 0 = c + h + -1x
-1a = c + h + -1x

Divide each side by '-1'.
a = -1c + -1h + x

Simplifying
a = -1c + -1h + x