2x+x+21=149

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Solution for 2x+x+21=149 equation:


Simplifying
2x + x + 21 = 149

Reorder the terms:
21 + 2x + x = 149

Combine like terms: 2x + x = 3x
21 + 3x = 149

Solving
21 + 3x = 149

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + 3x = 149 + -21

Combine like terms: 21 + -21 = 0
0 + 3x = 149 + -21
3x = 149 + -21

Combine like terms: 149 + -21 = 128
3x = 128

Divide each side by '3'.
x = 42.66666667

Simplifying
x = 42.66666667

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