-7b+3a-6a-9b=-7b+(-9b)

Solution for -7b+3a-6a-9b=-7b+(-9b) equation:

Simplifying
-7b + 3a + -6a + -9b = -7b + (-9b)

Reorder the terms:
3a + -6a + -7b + -9b = -7b + (-9b)

Combine like terms: 3a + -6a = -3a
-3a + -7b + -9b = -7b + (-9b)

Combine like terms: -7b + -9b = -16b
-3a + -16b = -7b + (-9b)

Combine like terms: -7b + (-9b) = -16b
-3a + -16b = -16b

Add '16b' to each side of the equation.
-3a + -16b + 16b = -16b + 16b

Combine like terms: -16b + 16b = 0
-3a + 0 = -16b + 16b
-3a = -16b + 16b

Combine like terms: -16b + 16b = 0
-3a = 0

Solving
-3a = 0

Solving for variable 'a'.

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

Divide each side by '-3'.
a = 0

Simplifying
a = 0