If the absolute value of a plus b minus 1 is equal to 0, then a equals, b equals

A=0 b=1

Given that the absolute value of A is equal to 5, the absolute value of B is equal to 9, and the absolute value of A plus B is equal to A plus B, find the value of A minus B

The absolute value of A is equal to 5, so A is equal to 5 or -5.
The absolute value of B is equal to 9, so B is equal to 9 or -9.
The absolute value of A plus B is equal to A plus B, so A+B is greater than or equal to 0.
Then B =9 A =5 or -5
So A-B =-4 or -14

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