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 additionequation that models theproblem
(c) Solve the Equation
(d) Answer the Question
how much dose the t-shirt cost 23=12-x x=11 so the anser is 11
(a) The unknown information is the cost of the T-shirt.
(b) Let x represent the cost of the T-shirt. The addition equation that models the problem is: x + 12 = 23.
(c) To solve the equation, we need to isolate the variable x. We can do this by subtracting 12 from both sides of the equation:
x + 12 - 12 = 23 - 12
x = 11
So, the cost of the T-shirt is $11.
(d) The T-shirt cost $11.