8a=12a-7b-9b-11a

Solution for 8a=12a-7b-9b-11a equation:

Simplifying
8a = 12a + -7b + -9b + -11a

Reorder the terms:
8a = 12a + -11a + -7b + -9b

Combine like terms: 12a + -11a = 1a
8a = 1a + -7b + -9b

Combine like terms: -7b + -9b = -16b
8a = 1a + -16b

Solving
8a = 1a + -16b

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
8a + -1a = 1a + -1a + -16b

Combine like terms: 8a + -1a = 7a
7a = 1a + -1a + -16b

Combine like terms: 1a + -1a = 0
7a = 0 + -16b
7a = -16b

Divide each side by '7'.
a = -2.285714286b

Simplifying
a = -2.285714286b