👤

a+b=85, a+b=67, b=23+c . a,b,c=?

Răspuns :

c=85-67
c=18

b=18+23
b=41

a=67-41
a=26
a+b+c=85
a+b=67
b=23+c

67+c=85
c=18

b=23+18
b=41

a+41=67
a=26