Răspuns :
a= nr fete
b= nr baieti
a+b=36
a= b-8
--------------
a=? b=?
b I---I---I---I---I---I---I---I---I---I } 36
a I---I }
a+b=36
b-8+b=36 |+8
2b= 44 | :2
b = 22
a= b-8
a=22-8
a=14
b= nr baieti
a+b=36
a= b-8
--------------
a=? b=?
b I---I---I---I---I---I---I---I---I---I } 36
a I---I }
a+b=36
b-8+b=36 |+8
2b= 44 | :2
b = 22
a= b-8
a=22-8
a=14
f+b=36
b=f+8
f |----|
b |----|+8
36-8=28(2 segmente egale sau 2f)
28:2=14(f)
14+8=22(b)
Verificare:14+22=36
Pt cealalta problema
a+b+c=255
b=a+2
c=b+2
a |----|
b |----|+2
c |----|+2+2
255-6=249(3 segmente egale sau 3a)
249:3=83(a)
83+2=85(b)
85+2=87(c)
Verificare:83+85+87=168+87=255
Sper ca te-am ajutat!
b=f+8
f |----|
b |----|+8
36-8=28(2 segmente egale sau 2f)
28:2=14(f)
14+8=22(b)
Verificare:14+22=36
Pt cealalta problema
a+b+c=255
b=a+2
c=b+2
a |----|
b |----|+2
c |----|+2+2
255-6=249(3 segmente egale sau 3a)
249:3=83(a)
83+2=85(b)
85+2=87(c)
Verificare:83+85+87=168+87=255
Sper ca te-am ajutat!