42+63x+63-21x=105

Solution for 42+63x+63-21x=105 equation:

Simplifying
42 + 63x + 63 + -21x = 105

Reorder the terms:
42 + 63 + 63x + -21x = 105

Combine like terms: 42 + 63 = 105
105 + 63x + -21x = 105

Combine like terms: 63x + -21x = 42x
105 + 42x = 105

Add '-105' to each side of the equation.
105 + -105 + 42x = 105 + -105

Combine like terms: 105 + -105 = 0
0 + 42x = 105 + -105
42x = 105 + -105

Combine like terms: 105 + -105 = 0
42x = 0

Solving
42x = 0

Solving for variable 'x'.

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

Divide each side by '42'.
x = 0

Simplifying
x = 0