b(-a)=-27

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Solution for b(-a)=-27 equation: 


Simplifying
b(-1a) = -27

Remove parenthesis around (-1a)
b * -1a = -27

Reorder the terms for easier multiplication:
-1b * a = -27

Multiply b * a
-1ab = -27

Solving
-1ab = -27

Solving for variable 'a'.

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

Divide each side by '-1b'.
a = 27b-1

Simplifying
a = 27b-1

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