6b-9a=-21

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Solution for 6b-9a=-21 equation: 


Simplifying
6b + -9a = -21

Reorder the terms:
-9a + 6b = -21

Solving
-9a + 6b = -21

Solving for variable 'a'.

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

Add '-6b' to each side of the equation.
-9a + 6b + -6b = -21 + -6b

Combine like terms: 6b + -6b = 0
-9a + 0 = -21 + -6b
-9a = -21 + -6b

Divide each side by '-9'.
a = 2.333333333 + 0.6666666667b

Simplifying
a = 2.333333333 + 0.6666666667b

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