.6-.4a=.4

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Solution for .6-.4a=.4 equation: 


Simplifying
0.6 + -0.4a = 0.4

Solving
0.6 + -0.4a = 0.4

Solving for variable 'a'.

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

Add '-0.6' to each side of the equation.
0.6 + -0.6 + -0.4a = 0.4 + -0.6

Combine like terms: 0.6 + -0.6 = 0.0
0.0 + -0.4a = 0.4 + -0.6
-0.4a = 0.4 + -0.6

Combine like terms: 0.4 + -0.6 = -0.2
-0.4a = -0.2

Divide each side by '-0.4'.
a = 0.5

Simplifying
a = 0.5

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