423=14 955=19 142⏺️=16 135⏺️=18 844-123⏺️=? 42:3=14; 95:5=19; 14+2=16; 13+5=18 (84:4)-(12+3)=21-15=6

Ответ:

It seems like you're using a pattern where the numbers on the left side are split and operated upon to match the number on the right side. Following that pattern for 844-123⏺️:

(84:4) - (12+3) = 21 - 15 = 6