AnB=A-(A-B)

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Solution for AnB=A-(A-B) equation: 


Simplifying
AnB = A + -1(A + -1B)
nAB = A + (A * -1 + -1B * -1)
nAB = A + (-1A + 1B)

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

Solving
nAB = 1B

Solving for variable 'n'.

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

Divide each side by 'AB'.
n = A-1

Simplifying
n = A-1

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