a-25=-4

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Solution for a-25=-4 equation: 


Simplifying
a + -25 = -4

Reorder the terms:
-25 + a = -4

Solving
-25 + a = -4

Solving for variable 'a'.

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

Add '25' to each side of the equation.
-25 + 25 + a = -4 + 25

Combine like terms: -25 + 25 = 0
0 + a = -4 + 25
a = -4 + 25

Combine like terms: -4 + 25 = 21
a = 21

Simplifying
a = 21

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