(324:2+345:5)+12346=4xa+12177

Răspuns :

(324:2+345:5)+12346=4×a+12177
(162+345:5)+12346=4×a+12177
(162+69)+12346=4×a+12177
231+12346=4×a+12177
12577-12177=4×a
400=4×a
400:4=100
Sper ca e bine!!!