6a+9-3a=9+3-4a

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Solution for 6a+9-3a=9+3-4a equation:


Simplifying
6a + 9 + -3a = 9 + 3 + -4a

Reorder the terms:
9 + 6a + -3a = 9 + 3 + -4a

Combine like terms: 6a + -3a = 3a
9 + 3a = 9 + 3 + -4a

Combine like terms: 9 + 3 = 12
9 + 3a = 12 + -4a

Solving
9 + 3a = 12 + -4a

Solving for variable 'a'.

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

Add '4a' to each side of the equation.
9 + 3a + 4a = 12 + -4a + 4a

Combine like terms: 3a + 4a = 7a
9 + 7a = 12 + -4a + 4a

Combine like terms: -4a + 4a = 0
9 + 7a = 12 + 0
9 + 7a = 12

Add '-9' to each side of the equation.
9 + -9 + 7a = 12 + -9

Combine like terms: 9 + -9 = 0
0 + 7a = 12 + -9
7a = 12 + -9

Combine like terms: 12 + -9 = 3
7a = 3

Divide each side by '7'.
a = 0.4285714286

Simplifying
a = 0.4285714286

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