12a+12-5a-9=

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Solution for 12a+12-5a-9= equation:


Simplifying
12a + 12 + -5a + -9 = 0

Reorder the terms:
12 + -9 + 12a + -5a = 0

Combine like terms: 12 + -9 = 3
3 + 12a + -5a = 0

Combine like terms: 12a + -5a = 7a
3 + 7a = 0

Solving
3 + 7a = 0

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + 7a = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 7a = 0 + -3
7a = 0 + -3

Combine like terms: 0 + -3 = -3
7a = -3

Divide each side by '7'.
a = -0.4285714286

Simplifying
a = -0.4285714286

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