8.2x+4.2=20.4

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Solution for 8.2x+4.2=20.4 equation: 


Simplifying
8.2x + 4.2 = 20.4

Reorder the terms:
4.2 + 8.2x = 20.4

Solving
4.2 + 8.2x = 20.4

Solving for variable 'x'.

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

Add '-4.2' to each side of the equation.
4.2 + -4.2 + 8.2x = 20.4 + -4.2

Combine like terms: 4.2 + -4.2 = 0.0
0.0 + 8.2x = 20.4 + -4.2
8.2x = 20.4 + -4.2

Combine like terms: 20.4 + -4.2 = 16.2
8.2x = 16.2

Divide each side by '8.2'.
x = 1.975609756

Simplifying
x = 1.975609756

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