first off, 6 is not a multiple of 42, it is a divisor or factor of 42
for the equation, X + Y = 42 could have X and Y each equal to 21 resulting in no winner so... XYZ=42 where X and Y represent each side of the debate and Z is the number of scooby snacks each person that reads this should give me. Variables must be whole numbers X, Y, and Z equal 2, 3, and 7 respectively and you all owe me 7 scoobies. Mwahahahahaaaaaaaa.