Question

21 in baza x • 222 in baza 3 = 3030 in baza 5
Afla numarul X.

Answer 1

Răspuns:

x=7

Explicație pas cu pas:ttrecem tot, mai putin 21 in baza x,  in baza 10

21 in baza x* (2+2*3+2*9)=3*5+3*125

21 in baza x * 26=390|:13 in baza 10

21 in baza x*2=30

21 in baza x=15

deci x<10

2x+1=15

2x=14

x=7