👤

Afla valorile numerelor a,b,c,d dacă a+a=bb+b=c,c+c=d,a+b+c+d=15000

Răspuns :

a+a=b adica b=2a  

b+b=c adica c=2b

c+c=d adica d=2c

a+b+c+d=15000

d=8a

c=4a

b=2a

a+2a+4a+8a=15000

15a=15000

a=15000:15

a=1000

b=2a

b=2000

c=4a

c=4000

d=8a

d=8000


a=1000

b=2000

c=4000

d=8000