0.4a+0.8b=1.2

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Solution for 0.4a+0.8b=1.2 equation: 


Simplifying
0.4a + 0.8b = 1.2

Solving
0.4a + 0.8b = 1.2

Solving for variable 'a'.

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

Add '-0.8b' to each side of the equation.
0.4a + 0.8b + -0.8b = 1.2 + -0.8b

Combine like terms: 0.8b + -0.8b = 0.0
0.4a + 0.0 = 1.2 + -0.8b
0.4a = 1.2 + -0.8b

Divide each side by '0.4'.
a = 3 + -2b

Simplifying
a = 3 + -2b

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