My question is about guess my rule, in Russian math.

Question

x - y
1=21
2=22
7=27
8= don't know
9= don't know
_ = 33
33- don't know
_ = 65
102=don't know
_ - 130
and then it says
Rule: y=...
and so yeah. the signs that are like this _ mean I don't know basically.

Answer 1

just looking at theb first three entries, I'd say that y = x+20