2*[(x+18)+(x)]=84

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Solution for 2*[(x+18)+(x)]=84 equation:


Simplifying
2[(x + 18) + (x)] = 84

Reorder the terms:
2[(18 + x) + (x)] = 84

Remove parenthesis around (18 + x)
2[18 + x + (x)] = 84
2[18 + x + x] = 84

Combine like terms: x + x = 2x
2[18 + 2x] = 84
[18 * 2 + 2x * 2] = 84
[36 + 4x] = 84

Solving
36 + 4x = 84

Solving for variable 'x'.

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

Add '-36' to each side of the equation.
36 + -36 + 4x = 84 + -36

Combine like terms: 36 + -36 = 0
0 + 4x = 84 + -36
4x = 84 + -36

Combine like terms: 84 + -36 = 48
4x = 48

Divide each side by '4'.
x = 12

Simplifying
x = 12

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