Question

3. At the mall, Leona bought a T-shirt and a book for a total of $23. The book cost $12. How much did the T-shirt cost?

Answer 1

A. The unknown information is the price of the T-shirt

b. 23 = 12 + x

c. 23 = 12 + x 
    (-12) + 23 = 12 + ( -12) + x
    11 = x
(Subtract 12 from 23 and you'll get 11)

d. She bought the T- shirt at the price of $11 

I hope I helped! (Please pick me as Brainliest!)