x+2x+15=81

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Solution for x+2x+15=81 equation:


Simplifying
x + 2x + 15 = 81

Reorder the terms:
15 + x + 2x = 81

Combine like terms: x + 2x = 3x
15 + 3x = 81

Solving
15 + 3x = 81

Solving for variable 'x'.

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

Add '-15' to each side of the equation.
15 + -15 + 3x = 81 + -15

Combine like terms: 15 + -15 = 0
0 + 3x = 81 + -15
3x = 81 + -15

Combine like terms: 81 + -15 = 66
3x = 66

Divide each side by '3'.
x = 22

Simplifying
x = 22

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