https://oftob.com/tj/математика/38-гуногун/406-исботи-айнияти-ададӣ-underbrace{44-4}_{n-1-text{-то}}3-underbrace{55-5}_{n-1-text{-то}}6-underbrace{88-8}_{n-text{-то}}-underbrace{44-4}_{2n-text{-то}},-quad-n-in-n
Исботи айнияти ададӣ: \(\underbrace{44...4}_{n-1\text{-то}}3\underbrace{55...5}_{n-1\text{-то}}6 \underbrace{88...8}_{n\text{-то}}= \underbrace{44...4}_{2n\text{-то}}, \quad n \in N\)