Respuesta:
a. 3
Explicación paso a paso:
Resolución
1 × 2 = 2
2 - 1 = 1
3 × 4 = 12
12 - 3 = 9
5 × 3 = 15
15 - ? = 12
15 - 12 = ?
3 = ?
comprobación : 15 - 3 = 12
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Verified answer
Respuesta:
a. 3
Explicación paso a paso:
Resolución
1 × 2 = 2
2 - 1 = 1
3 × 4 = 12
12 - 3 = 9
5 × 3 = 15
15 - ? = 12
15 - 12 = ?
3 = ?
comprobación : 15 - 3 = 12