420=.4x

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Solution for 420=.4x equation:


Simplifying
420 = 0.4x

Solving
420 = 0.4x

Solving for variable 'x'.

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

Add '-0.4x' to each side of the equation.
420 + -0.4x = 0.4x + -0.4x

Combine like terms: 0.4x + -0.4x = 0.0
420 + -0.4x = 0.0

Add '-420' to each side of the equation.
420 + -420 + -0.4x = 0.0 + -420

Combine like terms: 420 + -420 = 0
0 + -0.4x = 0.0 + -420
-0.4x = 0.0 + -420

Combine like terms: 0.0 + -420 = -420
-0.4x = -420

Divide each side by '-0.4'.
x = 1050

Simplifying
x = 1050

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