a-3=-9

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Solution for a-3=-9 equation: 


Simplifying
a + -3 = -9

Reorder the terms:
-3 + a = -9

Solving
-3 + a = -9

Solving for variable 'a'.

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

Add '3' to each side of the equation.
-3 + 3 + a = -9 + 3

Combine like terms: -3 + 3 = 0
0 + a = -9 + 3
a = -9 + 3

Combine like terms: -9 + 3 = -6
a = -6

Simplifying
a = -6

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