2 ( X + 1,2 ) = 2,7 - X

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Expanding both sides of the equation gives:

2X + 2 = 2.7 - X

Combining like terms gives:

3X + 2 = 2.7

Subtracting 2 from both sides gives:

3X = 0.7

Dividing by 3 gives:

X = 0.7/3

Therefore, the solution is:

X = 0.23333