8.4+x=20.8

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Solution for 8.4+x=20.8 equation: 


Simplifying
8.4 + x = 20.8

Solving
8.4 + x = 20.8

Solving for variable 'x'.

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

Add '-8.4' to each side of the equation.
8.4 + -8.4 + x = 20.8 + -8.4

Combine like terms: 8.4 + -8.4 = 0.0
0.0 + x = 20.8 + -8.4
x = 20.8 + -8.4

Combine like terms: 20.8 + -8.4 = 12.4
x = 12.4

Simplifying
x = 12.4

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