.4x-2.1=.3

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Solution for .4x-2.1=.3 equation: 


Simplifying
0.4x + -2.1 = 0.3

Reorder the terms:
-2.1 + 0.4x = 0.3

Solving
-2.1 + 0.4x = 0.3

Solving for variable 'x'.

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

Add '2.1' to each side of the equation.
-2.1 + 2.1 + 0.4x = 0.3 + 2.1

Combine like terms: -2.1 + 2.1 = 0.0
0.0 + 0.4x = 0.3 + 2.1
0.4x = 0.3 + 2.1

Combine like terms: 0.3 + 2.1 = 2.4
0.4x = 2.4

Divide each side by '0.4'.
x = 6

Simplifying
x = 6

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