Matt and Tikka thought of the same number. Matt added 7 to that number and then doubled the result. He got 26. Tikka did the same operations with their number, but in reverse order. Whst did she get?

19

Step-by-step explanation:

Matt ended up with 26.

We reverse the steps he did to get the original number that both people thought of.

26 / 2 = 13

13 - 7 = 6

6 is the original number.

Tikka did the same operations but in the reverse order so ...

6 X 2 = 12

12 + 7 = 19