A*a=B*b

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Solution for A*a=B*b equation: 


Simplifying
A * a = B * b

Multiply A * a
aA = B * b

Multiply B * b
aA = bB

Solving
aA = bB

Solving for variable 'a'.

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

Divide each side by 'A'.
a = bA-1B

Simplifying
a = bA-1B

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