A variable in a program is a named placeholder that can contain any integer value. The statement z + e replaces the old value of the variable x with the result of evaluating the expression e. For example, if x initially contains 7 then the statement z + z +1 results in x containing 8. If the variables x, y and z initially contain the values 7, -2, and 8 respectively. What will be the value of y after the following statements are executed, in order, twice: z + z + z - y z + 1 - y + z y + 1 - 2 · y -19 35 29 O 21 None of the other answers are correct

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