3+9a=6a-9

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Solution for 3+9a=6a-9 equation:


Simplifying
3 + 9a = 6a + -9

Reorder the terms:
3 + 9a = -9 + 6a

Solving
3 + 9a = -9 + 6a

Solving for variable 'a'.

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

Add '-6a' to each side of the equation.
3 + 9a + -6a = -9 + 6a + -6a

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

Combine like terms: 6a + -6a = 0
3 + 3a = -9 + 0
3 + 3a = -9

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

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

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

Divide each side by '3'.
a = -4

Simplifying
a = -4

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