(x+15)+x=81

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Solution for (x+15)+x=81 equation:


Simplifying
(x + 15) + x = 81

Reorder the terms:
(15 + x) + x = 81

Remove parenthesis around (15 + x)
15 + x + x = 81

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

Solving
15 + 2x = 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 + 2x = 81 + -15

Combine like terms: 15 + -15 = 0
0 + 2x = 81 + -15
2x = 81 + -15

Combine like terms: 81 + -15 = 66
2x = 66

Divide each side by '2'.
x = 33

Simplifying
x = 33

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