5a-20=4b

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Solution for 5a-20=4b equation: 


Simplifying
5a + -20 = 4b

Reorder the terms:
-20 + 5a = 4b

Solving
-20 + 5a = 4b

Solving for variable 'a'.

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

Add '20' to each side of the equation.
-20 + 20 + 5a = 20 + 4b

Combine like terms: -20 + 20 = 0
0 + 5a = 20 + 4b
5a = 20 + 4b

Divide each side by '5'.
a = 4 + 0.8b

Simplifying
a = 4 + 0.8b

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