Востоновите записи: а)1_ =_ = _ = _ = _ = _ = _ = _ = _ ; 3 6 9 12 15 18 21 27 42

Question

Востоновите записи: а)1_ =_ = _ = _ = _ = _ = _ = _ = _ ; 3 6 9 12 15 18 21 27 42

Answer 1

15=6+9=12+3=42-27=18-3=21+27-42+9