2x+x+42=123

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Solution for 2x+x+42=123 equation:


Simplifying
2x + x + 42 = 123

Reorder the terms:
42 + 2x + x = 123

Combine like terms: 2x + x = 3x
42 + 3x = 123

Solving
42 + 3x = 123

Solving for variable 'x'.

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

Add '-42' to each side of the equation.
42 + -42 + 3x = 123 + -42

Combine like terms: 42 + -42 = 0
0 + 3x = 123 + -42
3x = 123 + -42

Combine like terms: 123 + -42 = 81
3x = 81

Divide each side by '3'.
x = 27

Simplifying
x = 27

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