Question

Move a single matchstick to make the following expression true: 6+4=4

There are more then one solutions (atleast seven, check how many solutions you can find)

Answer 1

this is also one of the solutions 0+4=4

Answer 2

Puzzle was about the seven solutions and I found all seven -
0 + 4 = 4
8 - 4 = 4
5 + 4 = 9
6 + 4 > 4
6 ≠ 4 - 4
5 + 4 ≠ 4
6 - 4 ≠ 4

Answer 3

Take the vertical stick from the plus sign and make the 6 be 8. Now it will be
8 - 4 = 4.