0.4x-3.8=4.2

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Solution for 0.4x-3.8=4.2 equation: 


Simplifying
0.4x + -3.8 = 4.2

Reorder the terms:
-3.8 + 0.4x = 4.2

Solving
-3.8 + 0.4x = 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 + 0.4x = 4.2 + 3.8

Combine like terms: -3.8 + 3.8 = 0.0
0.0 + 0.4x = 4.2 + 3.8
0.4x = 4.2 + 3.8

Combine like terms: 4.2 + 3.8 = 8
0.4x = 8

Divide each side by '0.4'.
x = 20

Simplifying
x = 20

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