Respuesta:
x = 21
Explicación paso a paso:
a)
Fila 1: 18 - 12 = 6
Fila 2: 30 - 13 = 7
Fila 3: x - 17 = 4
x = 17 + 4
Espero te sirva :)
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Verified answer
Respuesta:
x = 21
Explicación paso a paso:
a)
Fila 1: 18 - 12 = 6
Fila 2: 30 - 13 = 7
Fila 3: x - 17 = 4
x = 17 + 4
x = 21
Espero te sirva :)