Respuesta :
5 books + x = 12 books
Subtract 5 from both sides to solve for x, which is representing the number of books Sam read last week.
5 - 5 + x = 12 - 5
x = 12 - 5
x = 7
Subtract 5 from both sides to solve for x, which is representing the number of books Sam read last week.
5 - 5 + x = 12 - 5
x = 12 - 5
x = 7
