X+3.5=21.8

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Solution for X+3.5=21.8 equation: 


Simplifying
X + 3.5 = 21.8

Reorder the terms:
3.5 + X = 21.8

Solving
3.5 + X = 21.8

Solving for variable 'X'.

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

Add '-3.5' to each side of the equation.
3.5 + -3.5 + X = 21.8 + -3.5

Combine like terms: 3.5 + -3.5 = 0.0
0.0 + X = 21.8 + -3.5
X = 21.8 + -3.5

Combine like terms: 21.8 + -3.5 = 18.3
X = 18.3

Simplifying
X = 18.3

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