-13a-1=25

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Solution for -13a-1=25 equation: 


Simplifying
-13a + -1 = 25

Reorder the terms:
-1 + -13a = 25

Solving
-1 + -13a = 25

Solving for variable 'a'.

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

Add '1' to each side of the equation.
-1 + 1 + -13a = 25 + 1

Combine like terms: -1 + 1 = 0
0 + -13a = 25 + 1
-13a = 25 + 1

Combine like terms: 25 + 1 = 26
-13a = 26

Divide each side by '-13'.
a = -2

Simplifying
a = -2

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