## Grandpa Severino's grandchildren

Being x the number of grandpa Severino's grandchildren, and y the amount he separated to give them, we have the following system:

12x + 60 = y

15x = y + 6

Substituting y in the second equation we have:

15x = (12x + 60) + 6

15x - 12x = 60 + 6

3x = 66

x = 22

**Grandpa Severino has 22 grandchildren!**

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