12.4=0.4A

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Solution for 12.4=0.4A equation: 


Simplifying
12.4 = 0.4A

Solving
12.4 = 0.4A

Solving for variable 'A'.

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

Add '-0.4A' to each side of the equation.
12.4 + -0.4A = 0.4A + -0.4A

Combine like terms: 0.4A + -0.4A = 0.0
12.4 + -0.4A = 0.0

Add '-12.4' to each side of the equation.
12.4 + -12.4 + -0.4A = 0.0 + -12.4

Combine like terms: 12.4 + -12.4 = 0.0
0.0 + -0.4A = 0.0 + -12.4
-0.4A = 0.0 + -12.4

Combine like terms: 0.0 + -12.4 = -12.4
-0.4A = -12.4

Divide each side by '-0.4'.
A = 31

Simplifying
A = 31

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