0=3a-9

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Solution for 0=3a-9 equation: 


Simplifying
0 = 3a + -9

Reorder the terms:
0 = -9 + 3a

Solving
0 = -9 + 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
0 + -3a = -9 + 3a + -3a
Remove the zero:
-3a = -9 + 3a + -3a

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

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

Simplifying
a = 3

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