X+3.9=8.6

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Solution for X+3.9=8.6 equation: 


Simplifying
X + 3.9 = 8.6

Reorder the terms:
3.9 + X = 8.6

Solving
3.9 + X = 8.6

Solving for variable 'X'.

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

Add '-3.9' to each side of the equation.
3.9 + -3.9 + X = 8.6 + -3.9

Combine like terms: 3.9 + -3.9 = 0.0
0.0 + X = 8.6 + -3.9
X = 8.6 + -3.9

Combine like terms: 8.6 + -3.9 = 4.7
X = 4.7

Simplifying
X = 4.7

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