It can physically show the sum difference between 2 comparisons
13.9
Explanation: add the amount he doesn’t in gift A (10.7) and the amount he spent on part B (5.4) and you get 16.1. The. Subtract 16.1 from 30 and you get 13.9
A book cafe is a relaxing place where you go to read books and eat/drink things you would get at a regular cafe. People also read books there.
Most operas begin with an overture, an orchestral introduction that includes many of the musical themes of the piece.
would say something like Style ... each beat in to three pieces and then playing the first and third part of music