Respuesta :

Answer:

3+5+2×2

11+7+13×2

19+23+17×2

1. 5x3+2=17+3=20 so for the first one the missing number is 3
2. 13+11+7=31+31=62 so the second one the missing number is 31
3. 23+19+17=59+59=118

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