Turm the wrong equation into correct | Matchstick Puzzle 7-2=9

I was completely stumped by this last puzzle , but maybe you've already figured it out ? Please share your knowledge in the comments below !

You will see answer of these puzzles :-

1) Matchstick puzzle 1+6=8
2) Matchstick puzzle 5+9=0
3) Matchstick puzzle 1+6=9
4) Matchstick puzzle 9-5=8
5) Matchstick puzzle 7-2=9
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