x+-3.8=-4.2

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Solution for x+-3.8=-4.2 equation: 


Simplifying
x + -3.8 = -4.2

Reorder the terms:
-3.8 + x = -4.2

Solving
-3.8 + x = -4.2

Solving for variable 'x'.

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

Add '3.8' to each side of the equation.
-3.8 + 3.8 + x = -4.2 + 3.8

Combine like terms: -3.8 + 3.8 = 0.0
0.0 + x = -4.2 + 3.8
x = -4.2 + 3.8

Combine like terms: -4.2 + 3.8 = -0.4
x = -0.4

Simplifying
x = -0.4

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