Both Cryptogram puzzles use the same code.

V=I

"UTDA L TLZZIUDDA TLEAQDP TIEYD VY YQSVXVAFZO DDSVD, CDICZD NIEZP YLO VQ'Y YCIIX-QLNEZLS."

"BIS TLZZIUDDA, V UIAPDS VB CLSDAQY QTVAX IB YDAPVAF QTDVS NIZZDFD XVPY YNLSD CLNXLFDY."
Solution