Respuesta :
Answer:
Her house number would be 7.
Step-by-step explanation:
If you add up all the houses previous to house number 7 the sum would be 21 which is three times her house number.
Answer:
Her house number would be 7.
Step-by-step explanation:
If you add up all the houses previous to house number 7 the sum would be 21 which is three times her house number.