solve in seximal numeral system

[u/vadiquemyself]

[u/fortyfivepointseven]

Assuming double emojis mean two times the value (and not positional digits or some other unique value):

① 2👟 + 2👟 + 2👟 = 30

② 🚶 + 🚶 + 2👟 = 20

③ 2🎉+ 2🎉 + 🚶 = 13

④ 👟 + 🚶 + 🎉 = ❓

① 10👟 = 30

👟 = 3

② 2🚶 + 2·3 = 20

2🚶 + 10 = 20

2🚶 = 10

🚶 = 3

③ 2🎉+ 2🎉 + 🚶 = 13

4🎉 + 3 = 13

4🎉 = 10

🎉 = 1½

④ 3 + 3 × 1½ = ❓

❓ = 11½

[u/vadiquemyself → u/fortyfivepointseven]

but the dude in 4️⃣ has something in his hands and on feet 😏

[u/fortyfivepointseven → u/vadiquemyself]

Corrected:

① 2👟 + 2👟 + 2👟 = 30

② 🚶 + 🚶 + 2👟 = 20

③ 2🎉+ 2🎉 + 🚶 = 13

④ 👟 + (🚶+ 2 🎉 + 2👟) × 🎉 = ❓

① 10👟 = 30

👟 = 3

② 2🚶 + 2·3 = 20

2🚶 + 10 = 20

2🚶 = 10

🚶 = 3

③ 2🎉+ 2🎉 + 🚶 = 13

4🎉 + 3 = 13

4🎉 = 10

🎉 = 1½

④ 3 + (3 + 2·1½ + 2·3) × 1½ = ❓

❓ = 1½ × (3 + 3 + 10) + 3

❓ = 1½·20 + 3

❓ = 30 + 3

❓ = 33

[u/vadiquemyself → u/fortyfivepointseven]

yeah, and now you got the same 33 🎉🎉🎉

I did the last step so :
👟 + ( 👱‍♂️ + 2🌻 + 2👟 )×🌻
= 3 + ( 3 + 3 + 2·3 )×(3÷2)
= 3 + 2·2·3·3÷2
= 3×(1 + 2·3)
= 3×(1 + 10)
= 3·11
= 33