a-3=-13

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Solution for a-3=-13 equation: 


Simplifying
a + -3 = -13

Reorder the terms:
-3 + a = -13

Solving
-3 + a = -13

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 = -13 + 3

Combine like terms: -3 + 3 = 0
0 + a = -13 + 3
a = -13 + 3

Combine like terms: -13 + 3 = -10
a = -10

Simplifying
a = -10

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