a-12.8=-9.7

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Solution for a-12.8=-9.7 equation: 


Simplifying
a + -12.8 = -9.7

Reorder the terms:
-12.8 + a = -9.7

Solving
-12.8 + a = -9.7

Solving for variable 'a'.

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

Add '12.8' to each side of the equation.
-12.8 + 12.8 + a = -9.7 + 12.8

Combine like terms: -12.8 + 12.8 = 0.0
0.0 + a = -9.7 + 12.8
a = -9.7 + 12.8

Combine like terms: -9.7 + 12.8 = 3.1
a = 3.1

Simplifying
a = 3.1

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