23.1=a-15

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Solution for 23.1=a-15 equation: 


Simplifying
23.1 = a + -15

Reorder the terms:
23.1 = -15 + a

Solving
23.1 = -15 + 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.
23.1 + -1a = -15 + a + -1a

Combine like terms: a + -1a = 0
23.1 + -1a = -15 + 0
23.1 + -1a = -15

Add '-23.1' to each side of the equation.
23.1 + -23.1 + -1a = -15 + -23.1

Combine like terms: 23.1 + -23.1 = 0.0
0.0 + -1a = -15 + -23.1
-1a = -15 + -23.1

Combine like terms: -15 + -23.1 = -38.1
-1a = -38.1

Divide each side by '-1'.
a = 38.1

Simplifying
a = 38.1

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