b-a=9

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Solution for b-a=9 equation: 


Simplifying
b + -1a = 9

Reorder the terms:
-1a + b = 9

Solving
-1a + b = 9

Solving for variable 'a'.

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

Add '-1b' to each side of the equation.
-1a + b + -1b = 9 + -1b

Combine like terms: b + -1b = 0
-1a + 0 = 9 + -1b
-1a = 9 + -1b

Divide each side by '-1'.
a = -9 + b

Simplifying
a = -9 + b

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