(639+y)-239 при у =38;95;

Question

(639+y)-239 при у =38;95;

Answer 1

Y=38; (639+38)-239=438
y=95; (639+95)-239=495

Answer 2

У=38:
(639+38)-239=677-239=438;
у=95:
(639+95)-239=734-239=495.