6a-3(2a-3)+9(3-a)=12

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Solution for 6a-3(2a-3)+9(3-a)=12 equation:


Simplifying
6a + -3(2a + -3) + 9(3 + -1a) = 12

Reorder the terms:
6a + -3(-3 + 2a) + 9(3 + -1a) = 12
6a + (-3 * -3 + 2a * -3) + 9(3 + -1a) = 12
6a + (9 + -6a) + 9(3 + -1a) = 12
6a + 9 + -6a + (3 * 9 + -1a * 9) = 12
6a + 9 + -6a + (27 + -9a) = 12

Reorder the terms:
9 + 27 + 6a + -6a + -9a = 12

Combine like terms: 9 + 27 = 36
36 + 6a + -6a + -9a = 12

Combine like terms: 6a + -6a = 0
36 + 0 + -9a = 12
36 + -9a = 12

Solving
36 + -9a = 12

Solving for variable 'a'.

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

Add '-36' to each side of the equation.
36 + -36 + -9a = 12 + -36

Combine like terms: 36 + -36 = 0
0 + -9a = 12 + -36
-9a = 12 + -36

Combine like terms: 12 + -36 = -24
-9a = -24

Divide each side by '-9'.
a = 2.666666667

Simplifying
a = 2.666666667

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