It is absolutely correct to move a match to the equal sign in11.

1 1+ 1+ 1≠4

Method 2:

Move 1 in the plus sign to the minus sign and increase it to11.

That's it

1 1 1 1+ 1- 1=4

The "1" on the left side of the equation can only be regarded as a match, and finally you get11= 4, that is, four matches.

Otherwise there is no solution.