3a-9=-63

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Solution for 3a-9=-63 equation: 


Simplifying
3a + -9 = -63

Reorder the terms:
-9 + 3a = -63

Solving
-9 + 3a = -63

Solving for variable 'a'.

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

Add '9' to each side of the equation.
-9 + 9 + 3a = -63 + 9

Combine like terms: -9 + 9 = 0
0 + 3a = -63 + 9
3a = -63 + 9

Combine like terms: -63 + 9 = -54
3a = -54

Divide each side by '3'.
a = -18

Simplifying
a = -18

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