0.5a-0.2b=30

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Solution for 0.5a-0.2b=30 equation: 


Simplifying
0.5a + -0.2b = 30

Solving
0.5a + -0.2b = 30

Solving for variable 'a'.

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

Add '0.2b' to each side of the equation.
0.5a + -0.2b + 0.2b = 30 + 0.2b

Combine like terms: -0.2b + 0.2b = 0.0
0.5a + 0.0 = 30 + 0.2b
0.5a = 30 + 0.2b

Divide each side by '0.5'.
a = 60 + 0.4b

Simplifying
a = 60 + 0.4b

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