👤

 gaseste numerele a, b,c, a+1=40+b-40=c-1=a+b+c-40

Răspuns :

a+1=40+b-40
a+1=b

c-1=a+b+c-40
c-1=a+a+1+c-40

c-1-c-1+40=2a
38=2a
a=38:2
a=19


b=a+1=19+1=20
  b=20

a+1=c-1
19+1=c-1
20=c-1
c=20+2
c=21

a+1=40+b-40
a+1=b

c-1=a+b+c-40
c-1=a+a+1+c-40

c-1-c-1+40=2a
38=2a
a=38:2
a=19


b=a+1=19+1=20
  b=20

a+1=c-1
19+1=c-1
20=c-1
c=20+2
c=21