Respuesta :

Answer:

30

Step-by-step explanation:

210=120x1+90

120=90x1+30

90=30x3+0

Answer:

30

Step-by-step explanation:

120 = 2³ × 3 × 5

210 = 2 × 3 × 5 × 7

HCF(120 ; 210) = 2 × 3 × 5 = 30