3a+3=9+a

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Solution for 3a+3=9+a equation: 


Simplifying
3a + 3 = 9 + a

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

Solving
3 + 3a = 9 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
3 + 3a + -1a = 9 + a + -1a

Combine like terms: 3a + -1a = 2a
3 + 2a = 9 + a + -1a

Combine like terms: a + -1a = 0
3 + 2a = 9 + 0
3 + 2a = 9

Add '-3' to each side of the equation.
3 + -3 + 2a = 9 + -3

Combine like terms: 3 + -3 = 0
0 + 2a = 9 + -3
2a = 9 + -3

Combine like terms: 9 + -3 = 6
2a = 6

Divide each side by '2'.
a = 3

Simplifying
a = 3

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