a+4=-9

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Solution for a+4=-9 equation: 


Simplifying
a + 4 = -9

Reorder the terms:
4 + a = -9

Solving
4 + a = -9

Solving for variable 'a'.

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

Add '-4' to each side of the equation.
4 + -4 + a = -9 + -4

Combine like terms: 4 + -4 = 0
0 + a = -9 + -4
a = -9 + -4

Combine like terms: -9 + -4 = -13
a = -13

Simplifying
a = -13

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