ab=cd-2

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Solution for ab=cd-2 equation: 


Simplifying
ab = cd + -2

Reorder the terms:
ab = -2 + cd

Solving
ab = -2 + cd

Solving for variable 'a'.

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

Divide each side by 'b'.
a = -2b-1 + b-1cd

Simplifying
a = -2b-1 + b-1cd

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