Question

Va rog URGENT! MULȚUMESC!

Answer 1

$1+37a+23b+21c+75d+15e=2019\\37a+23b+21c+75d+15e=2018 \implies 2|(37a+23b+21c+75d+15e) \ (1)\\a < b < c < d < e \ (2)\\(1),(2)\implies \boxed{a=2}\\23b+21c+75d+15e=1944\\3|21c,75d,15e,1944 \implies 3|23b \implies \boxed{b=3}\\21c+75d+15e=1875\\5|75d,15e,1875 \implies 5|21c \implies \boxed{c=5}\\75d+15e=1770\\5d+e=118\\pentru:\\\ \boxed{d=7, e =83}\\ \ d=11, e=63\\ \ \boxed{d=13,e=53}\\\ d=17,e=33\\\ \boxed{d=19,e=23}\\\\(a,b,c,d,e) \in \{(2,3,5,7,83),(2,3,5,13,53),(2,3,5,19,23)\}$

Answer 2

Răspuns:

Explicație pas cu pas: