(X+3)+(x-3)=91

Solution for (X+3)+(x-3)=91 equation:

Simplifying
(X + 3) + (x + -3) = 91

Reorder the terms:
(3 + X) + (x + -3) = 91

Remove parenthesis around (3 + X)
3 + X + (x + -3) = 91

Reorder the terms:
3 + X + (-3 + x) = 91

Remove parenthesis around (-3 + x)
3 + X + -3 + x = 91

Reorder the terms:
3 + -3 + X + x = 91

Combine like terms: 3 + -3 = 0
0 + X + x = 91
X + x = 91

Solving
X + x = 91

Solving for variable 'X'.

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

Add '-1x' to each side of the equation.
X + x + -1x = 91 + -1x

Combine like terms: x + -1x = 0
X + 0 = 91 + -1x
X = 91 + -1x

Simplifying
X = 91 + -1x