Turn the wrong equation into the correct | Matchstick puzzle 5+3=9

This last puzzle completely stumped me, but maybe you’ve already figured it out. Please share your knowledge in the comments below!

You will see answers to these puzzles:-

1) Matchstick puzzle 6+8=3
2) Matchstick puzzle 5+3=1
3) Matchstick puzzle 1+4=6
4) Matchstick puzzle 1+3=9
5) Matchstick puzzle 1-7=15
6) Matchstick puzzle 5+3=9