how to solve this problem
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1+1+1
______
1-1+(a-3)(b-3)
= 3
_____
a-3×b-3
=3
____
-9ab
=1
___
-2ab
______
1-1+(a-3)(b-3)
= 3
_____
a-3×b-3
=3
____
-9ab
=1
___
-2ab
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