21a=3.99

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Solution for 21a=3.99 equation: 


Simplifying
21a = 3.99

Solving
21a = 3.99

Solving for variable 'a'.

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

Divide each side by '21'.
a = 0.19

Simplifying
a = 0.19

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