a = 3b
a - 136 = b + 84
3b - 136 = b + 84
3b - b = 136 + 84
2b = 220
b = 110
a = 330
Verificare:
330 - 136 = 194
110 + 84 = 194
R /---/---/---/---/---/---/---/
M/---/
daca i-ar da lui M 18 vederi atunci R ar avea
R /---/---/---/---/---/---/...18
M/---/.18.
7 segm - 18 = 3segm + 3*18 =3 segm+54 (pentru ca ni se spune ca are de 3 orimai multe decat M) ⇒ 4 segm=54+18=72
1 segm =72:4=18
M are 18
R are 7*18=126
verificare 126-18=108
18+18=36=108:3
a + a+2 + a+4 = a+70
3a + 6 = a + 70
2a = 64
=> a = 32 => numerele sunt 32, 34 si 36