x+x+7+2(x+7)=129

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Solution for x+x+7+2(x+7)=129 equation:


Simplifying
x + x + 7 + 2(x + 7) = 129

Reorder the terms:
x + x + 7 + 2(7 + x) = 129
x + x + 7 + (7 * 2 + x * 2) = 129
x + x + 7 + (14 + 2x) = 129

Reorder the terms:
7 + 14 + x + x + 2x = 129

Combine like terms: 7 + 14 = 21
21 + x + x + 2x = 129

Combine like terms: x + x = 2x
21 + 2x + 2x = 129

Combine like terms: 2x + 2x = 4x
21 + 4x = 129

Solving
21 + 4x = 129

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 + 4x = 129 + -21

Combine like terms: 21 + -21 = 0
0 + 4x = 129 + -21
4x = 129 + -21

Combine like terms: 129 + -21 = 108
4x = 108

Divide each side by '4'.
x = 27

Simplifying
x = 27

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