3a-9=3+a

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


Simplifying
3a + -9 = 3 + a

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

Solving
-9 + 3a = 3 + 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.
-9 + 3a + -1a = 3 + a + -1a

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

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

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

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

Combine like terms: 3 + 9 = 12
2a = 12

Divide each side by '2'.
a = 6

Simplifying
a = 6

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