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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?
(a) What is the unknown information?
(b) Let x represent the unknown information. Write an addition equation that models the problem
(c) Solve the equation.
(d) Answer the question.

Respuesta :

growl
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!)