a-13=0

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Solution for a-13=0 equation: 


Simplifying
a + -13 = 0

Reorder the terms:
-13 + a = 0

Solving
-13 + a = 0

Solving for variable 'a'.

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

Add '13' to each side of the equation.
-13 + 13 + a = 0 + 13

Combine like terms: -13 + 13 = 0
0 + a = 0 + 13
a = 0 + 13

Combine like terms: 0 + 13 = 13
a = 13

Simplifying
a = 13

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