54-a=66

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Solution for 54-a=66 equation: 


Simplifying
54 + -1a = 66

Solving
54 + -1a = 66

Solving for variable 'a'.

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

Add '-54' to each side of the equation.
54 + -54 + -1a = 66 + -54

Combine like terms: 54 + -54 = 0
0 + -1a = 66 + -54
-1a = 66 + -54

Combine like terms: 66 + -54 = 12
-1a = 12

Divide each side by '-1'.
a = -12

Simplifying
a = -12

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