Vero: 88:4=22, 77x3=231, 20:2=10, 15:3=5, 55x2=110, 12X2=24, 6x2=12, Falso: 30:20=24, 1-1=32, 100-20=132, 90x20=34, 6-10=3, 80-40=23,

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