5.7-8.1=a

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Solution for 5.7-8.1=a equation: 


Simplifying
5.7 + -8.1 = a

Combine like terms: 5.7 + -8.1 = -2.4
-2.4 = a

Solving
-2.4 = a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
-2.4 + -1a = a + -1a

Combine like terms: a + -1a = 0
-2.4 + -1a = 0

Add '2.4' to each side of the equation.
-2.4 + 2.4 + -1a = 0 + 2.4

Combine like terms: -2.4 + 2.4 = 0.0
0.0 + -1a = 0 + 2.4
-1a = 0 + 2.4

Combine like terms: 0 + 2.4 = 2.4
-1a = 2.4

Divide each side by '-1'.
a = -2.4

Simplifying
a = -2.4

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