Advanced Challenge

Analyze the patterns and solve the equations!

1) Solve
949734-241526=
2) Solve
2742-2742=
3) Solve
398656-141460=
4) Solve
64771-60638=
5) Solve
2640-1756=
6) Solve
8973-3416=
7) Solve
5182-4599=
8) Solve
25628-14165=
9) Solve
374-321=
10) Solve
938118-263862=
11) Solve
537-335=
12) Solve
577373-383835=
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