simplify a-(a-b) - b - ( b - a )
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Answer:
a-b
Step-by-step explanation:
Solving the first bracket, the signs of both the a and b in the bracket reverse and thus they get cancelled by those outside the bracket. which in turn leaves us with -(b-a) and thus reversing the signs we get a-b.
Note: if there is a (-) sign outside the bracket, signs of those inside the brackets reverse.
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