7b-3a-12=9x

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Solution for 7b-3a-12=9x equation:


Simplifying
7b + -3a + -12 = 9x

Reorder the terms:
-12 + -3a + 7b = 9x

Solving
-12 + -3a + 7b = 9x

Solving for variable 'a'.

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

Add '12' to each side of the equation.
-12 + -3a + 12 + 7b = 12 + 9x

Reorder the terms:
-12 + 12 + -3a + 7b = 12 + 9x

Combine like terms: -12 + 12 = 0
0 + -3a + 7b = 12 + 9x
-3a + 7b = 12 + 9x

Add '-7b' to each side of the equation.
-3a + 7b + -7b = 12 + -7b + 9x

Combine like terms: 7b + -7b = 0
-3a + 0 = 12 + -7b + 9x
-3a = 12 + -7b + 9x

Divide each side by '-3'.
a = -4 + 2.333333333b + -3x

Simplifying
a = -4 + 2.333333333b + -3x

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