Question

XYXY ABCD EPPE + + - XYXY ABCD E=8 PEEP C=5 --------- ---------- --------- ZZZZ DECB NNCC

Answer 1

1) 1212+2121=3333; x=1, y=2 2) abcd+abcd=decb 1402+1402=2802 Как то так

Answer 2

It seems like you have provided a mathematical expression along with some symbols and equations. However, the expression is not clear and does not follow standard mathematical notation. Additionally, there is a series of equations that are not well-defined.

To help you with the expression and equations, please provide more context and clarify the notation or format you are using. If you have a specific mathematical problem or question you would like assistance with, feel free to share it, and I'll do my best to help you!