x+(2+2x)+(x+1.2)=12.4

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Solution for x+(2+2x)+(x+1.2)=12.4 equation: 


Simplifying
x + (2 + 2x) + (x + 1.2) = 12.4

Remove parenthesis around (2 + 2x)
x + 2 + 2x + (x + 1.2) = 12.4

Reorder the terms:
x + 2 + 2x + (1.2 + x) = 12.4

Remove parenthesis around (1.2 + x)
x + 2 + 2x + 1.2 + x = 12.4

Reorder the terms:
2 + 1.2 + x + 2x + x = 12.4

Combine like terms: 2 + 1.2 = 3.2
3.2 + x + 2x + x = 12.4

Combine like terms: x + 2x = 3x
3.2 + 3x + x = 12.4

Combine like terms: 3x + x = 4x
3.2 + 4x = 12.4

Solving
3.2 + 4x = 12.4

Solving for variable 'x'.

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

Add '-3.2' to each side of the equation.
3.2 + -3.2 + 4x = 12.4 + -3.2

Combine like terms: 3.2 + -3.2 = 0.0
0.0 + 4x = 12.4 + -3.2
4x = 12.4 + -3.2

Combine like terms: 12.4 + -3.2 = 9.2
4x = 9.2

Divide each side by '4'.
x = 2.3

Simplifying
x = 2.3

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