0.40a-1.20=.80

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Solution for 0.40a-1.20=.80 equation: 


Simplifying
0.40a + -1.20 = 0.80

Reorder the terms:
-1.20 + 0.40a = 0.80

Solving
-1.20 + 0.40a = 0.80

Solving for variable 'a'.

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

Add '1.20' to each side of the equation.
-1.20 + 1.20 + 0.40a = 0.80 + 1.20

Combine like terms: -1.20 + 1.20 = 0.00
0.00 + 0.40a = 0.80 + 1.20
0.40a = 0.80 + 1.20

Combine like terms: 0.80 + 1.20 = 2
0.40a = 2

Divide each side by '0.40'.
a = 5

Simplifying
a = 5

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