Thanks for playing and for your comment!
I understand Level 5 is challenging because it requires understanding calculation rules and solving puzzles. Since both target numbers are the same, I thought the hint that the previous number must also be the same would help, but it doesn't seem to be working well.
Also, this game doesn't require you to complete equations. You can advance to the next stage as long as you create the target number following specific calculation rules. If you felt you absolutely had to use the equals sign (=), that's a problem with my level design—my apologies.
Anyway, thank you!