5a-2.1=8.9

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Solution for 5a-2.1=8.9 equation: 


Simplifying
5a + -2.1 = 8.9

Reorder the terms:
-2.1 + 5a = 8.9

Solving
-2.1 + 5a = 8.9

Solving for variable 'a'.

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

Add '2.1' to each side of the equation.
-2.1 + 2.1 + 5a = 8.9 + 2.1

Combine like terms: -2.1 + 2.1 = 0.0
0.0 + 5a = 8.9 + 2.1
5a = 8.9 + 2.1

Combine like terms: 8.9 + 2.1 = 11
5a = 11

Divide each side by '5'.
a = 2.2

Simplifying
a = 2.2

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