Răspuns :
a + b + c = 144
Ma = (a +b) : 2 = 54
a + b = 54 × 2 = 108
=>c = 144 - 108 = 36 (al 3-lea numar)
a = c : 2 + 5
a = 36 : 2 + 5
a = 18 + 5
a = 23 (primul numar)
b = 108 - 23 = 85 (al 2-lea numar)
Verificare:
23 + 85 + 36 = 144
Ma = (a +b) : 2 = 54
a + b = 54 × 2 = 108
=>c = 144 - 108 = 36 (al 3-lea numar)
a = c : 2 + 5
a = 36 : 2 + 5
a = 18 + 5
a = 23 (primul numar)
b = 108 - 23 = 85 (al 2-lea numar)
Verificare:
23 + 85 + 36 = 144
not. nr. a, b, c
a+b+c= 144
m.a.=(a+b):2
54=(a+b):2/x2
108=a+b
108+c=144/-108
c=36
a=c:2 x5
a=36:2x5
a=18x5
a=90
b=108-a
b=108-90
b= 18
RASPUNS: a=90; b=18; c=36
a+b+c= 144
m.a.=(a+b):2
54=(a+b):2/x2
108=a+b
108+c=144/-108
c=36
a=c:2 x5
a=36:2x5
a=18x5
a=90
b=108-a
b=108-90
b= 18
RASPUNS: a=90; b=18; c=36