CD-B=A

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Solution for CD-B=A equation: 


Simplifying
CD + -1B = A

Reorder the terms:
-1B + CD = A

Solving
-1B + CD = A

Solving for variable 'B'.

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

Add '-1CD' to each side of the equation.
-1B + CD + -1CD = A + -1CD

Combine like terms: CD + -1CD = 0
-1B + 0 = A + -1CD
-1B = A + -1CD

Divide each side by '-1'.
B = -1A + CD

Simplifying
B = -1A + CD

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